How Long Have Humans Been On Earth? - CLT Livre

How Long Have Humans Been On Earth?

How Long Have Humans Been On Earth

When did humans first appear on Earth?

Humans first evolved in Africa, and much of human evolution occurred on that continent. The fossils of early humans who lived between 6 and 2 million years ago come entirely from Africa.

Did humans exist 25,000 years ago?

Timeline of Human Prehistory This timeline of human prehistory comprises the time from the first appearance of Homo sapiens in Africa 300,000 years ago to the invention of writing and the beginning of history, 5,000 years ago. It thus covers the time from the Middle Paleolithic (Old Stone Age) to the very beginnings of world history.

  • 315,000 years ago: approximate date of appearance of Homo sapiens (Jebel Irhoud, Morocco).
  • 270,000 years ago: age of Y-DNA haplogroup A00 (“Y-chromosomal Adam”).
  • 250,000 years ago: first appearance of Homo neanderthalensis (Saccopastore skulls).
  • 250,000–200,000 years ago: modern human presence in West Asia (Misliya cave).
  • 230,000–150,000 years ago: age of mt-DNA haplogroup L (“Mitochondrial Eve”).
  • 210,000 years ago: modern human presence in southeast Europe (Apidima, Greece).
  • 195,000 years ago: Omo remains (Ethiopia).
  • 170,000 years ago: humans are wearing clothing by this date.
  • 160,000 years ago: Homo sapiens idaltu,
  • 150,000 years ago: Peopling of Africa: Khoisanid separation, age of mtDNA haplogroup L0.
  • 125,000 years ago: peak of the Eemian interglacial period.
  • 120,000 years ago: It is possible that SE Australian Aboriginal people were cooking on hearths. Charcoal and Burnt Stone Feature #1 (CBS1) located within coastal dune sediments at Moyjil (Point Ritchie), Warrnambool, that independent geomorphic and OSL dating indicates is of Last Interglacial age (~120,000 years ago).
  • 120,000–90,000 years ago: Abbassia Pluvial in North Africa—the Sahara desert region is wet and fertile.
  • 120,000–75,000 years ago: Khoisanid back-migration from Southern Africa to East Africa.
  • 100,000 years ago: Earliest structures in the world (sandstone blocks set in a semi-circle with an oval foundation) built in Egypt close to Wadi Halfa near the modern border with Sudan.
  • 82,000 years ago: small perforated seashell beads from Taforalt in Morocco are the earliest evidence of personal adornment found anywhere in the world.
  • 80,000–70,000 years ago: Recent African origin: separation of sub-Saharan Africans and non-Africans.
  • 75,000 years ago: Toba Volcano supereruption that may have contributed to human populations being lowered to about 15,000 people.
  • 70,000 years ago: earliest example of abstract art or symbolic art from Blombos Cave, South Africa—stones engraved with grid or cross-hatch patterns.
  • 67,000–40,000 years ago: Neanderthal admixture to Eurasians.
  • 50,000 years ago: earliest sewing needle found. Made and used by Denisovans.
  • 50,000–30,000 years ago: Mousterian Pluvial in North Africa. The Sahara desert region is wet and fertile. Later Stone Age begins in Africa.
  • 45,000–43,000 years ago: European early modern humans.

“Epipaleolithic” or “Mesolithic” are terms for a transitional period between the Last Glacial Maximum and the Neolithic Revolution in Old World (Eurasian) cultures.

  • 45,000–40,000 years ago: Châtelperronian cultures in France.
  • 42,000 years ago: Paleolithic flutes in Germany.
  • 42,000 years ago: earliest evidence of advanced deep sea fishing technology at the Jerimalai cave site in East Timor—demonstrates high-level maritime skills and by implication the technology needed to make ocean crossings to reach Australia and other islands, as they were catching and consuming large numbers of big deep sea fish such as tuna.
  • 41,000 years ago: Denisova hominin lives in the Altai Mountains.
  • 40,000 years ago: extinction of Homo neanderthalensis.

Lion-man sculpture (Aurignacian, 40,000–35,000 years old).

  • 40,000 years ago: Aurignacian culture begins in Europe.
  • 40,000 years ago: oldest known figurative art the zoomorphic Löwenmensch figurine.

Bradshaw rock paintings found in the north-west Kimberley region of Western Australia.

  • 40,000–30,000 years ago: First human settlements formed by Aboriginal Australians in several areas which are today the cities of Sydney, Perth and Melbourne.
  • 40,000–20,000 years ago: oldest known ritual cremation, the Mungo Lady, in Lake Mungo, Australia.
  • 35,000 years ago: oldest known figurative art of a human figure as opposed to a zoomorphic figure (Venus of Hohle Fels).
  • 33,000 years ago: oldest known domesticated dog skulls show they existed in both Europe and Siberia by this time.
  • 31,000–16,000 years ago: Last Glacial Maximum (peak at 26,500 years ago).
  • 30,000 years ago: rock paintings tradition begins in Bhimbetka rock shelters in India, which presently as a collection is the densest known concentration of rock art. In an area about 10 km 2, there are about 800 rock shelters of which 500 contain paintings.
  • 29,000 years ago: The earliest ovens found.
  • 28,500 years ago: New Guinea is populated by colonists from Asia or Australia.
  • 28,000 years ago: oldest known twisted rope.
  • 28,000–24,000 years ago: oldest known pottery—used to make figurines rather than cooking or storage vessels (Venus of Dolní Věstonice).
  • 28,000–20,000 years ago: Gravettian period in Europe. Harpoons and saws invented.
  • 26,000 years ago: people around the world use fibers to make baby carriers, clothes, bags, baskets, and nets.
  • 25,000 years ago: a hamlet consisting of huts built of rocks and of mammoth bones is founded in what is now Dolní Věstonice in Moravia in the Czech Republic. This is the oldest human permanent settlement that has yet been found by archaeologists.
  • 24,000 years ago: Evidence suggests humans living in Alaska and Yukon North America.
  • 21,000 years ago: artifacts suggest early human activity occurred in Canberra, the capital city of Australia.
  • 20,000 years ago: Kebaran culture in the Levant: beginning of the Epipalaeolithic in the Levant
  • 20,000 years ago: oldest pottery storage or cooking vessels from China.
  • 20,000–10,000 years ago: Khoisanid expansion to Central Africa.
  • 20,000–19,000 years ago: earliest pottery use, in Xianren Cave, China.
  • 18,000–12,000 years ago: Though estimations vary widely, it is believed by scholars that Afro-Asiatic was spoken as a single language around this time period.
  • 16,000–14,000 years ago: Minatogawa Man (Proto-Mongoloid phenotype) in Okinawa, Japan
  • 16,000–13,000 years ago: first human migration into North America.
  • 16,000–11,000 years ago: Caucasian Hunter-Gatherer expansion to Europe.
  • 16,000 years ago: Wisent (European bison) sculpted in clay deep inside the cave now known as Le Tuc d’Audoubert in the French Pyrenees near what is now the border of Spain.
  • 15,000–14,700 years ago (13,000 BC to 12,700 BC): Earliest supposed date for the domestication of the pig.
  • 14,800 years ago: The Humid Period begins in North Africa. The region that would later become the Sahara is wet and fertile, and the aquifers are full.
  • 14,500–11,500: Red Deer Cave people in China, possible late survival of archaic or archaic-modern hybrid humans.

Cave painting of a battle between archers, Morella la Vella, Spain, the oldest known depiction of combat.

  • 14,000–12,000 years ago: Oldest evidence for prehistoric warfare (Jebel Sahaba massacre, Natufian culture).
  • 13,000–10,000 years ago: Late Glacial Maximum, end of the Last glacial period, climate warms, glaciers recede.
  • 13,000 years ago: A major water outbreak occurs on Lake Agassiz, which at the time could have been the size of the current Black Sea and the largest lake on Earth. Much of the lake is drained in the Arctic Ocean through the Mackenzie River.
  • 13,000–11,000 years ago: Earliest dates suggested for the domestication of the sheep.
  • 12,900–11,700 years ago: the Younger Dryas was a period of sudden cooling and return to glacial conditions.
  • 12,000 years ago: Jericho has evidence of settlement dating back to 10,000 BC. Jericho was a popular camping ground for Natufian hunter-gatherer groups, who left a scattering of crescent microlith tools behind them.
  • 12,000 years ago: Earliest dates suggested for the domestication of the goat.

How old is the human race on Earth?

Human Temporal range: 0.300–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ Chibanian – present
An adult human male (left) and female (right) (Thailand, 2007)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Hominidae
Subfamily: Homininae
Tribe: Hominini
Genus: Homo
Species: H. sapiens
Binomial name
Homo sapiens Linnaeus, 1758
Homo sapiens population density (2005)

Humans, or modern humans ( Homo sapiens ), are the most common and widespread species of primate, A great ape characterized by their hairlessness, bipedalism, and high intelligence, humans have a large brain and resulting cognitive skills that enable them to thrive in varied environments and develop complex societies and civilizations,

Humans are highly social and tend to live in complex social structures composed of many cooperating and competing groups, from families and kinship networks to political states, As such, social interactions between humans have established a wide variety of values, social norms, languages, and rituals, each of which bolsters human society,

The desire to understand and influence phenomena has motivated humanity’s development of science, technology, philosophy, mythology, religion, and other frameworks of knowledge, Humans in fact study themselves, through such domains as anthropology, social science, history, psychology and medicine,

Although some scientists equate the term “humans” with all members of the genus Homo, in common usage it generally refers to Homo sapiens, the only extant member. Other members of the genus Homo are known as archaic humans, Anatomically modern humans emerged around 300,000 years ago in Africa, evolving from Homo heidelbergensis or a similar species and migrating out of Africa, gradually replacing or interbreeding with local populations of archaic humans.

For most of their history, humans were nomadic hunter-gatherers. Humans began exhibiting behavioral modernity about 160,000–60,000 years ago. The Neolithic Revolution, which began in Southwest Asia around 13,000 years ago (and separately in a few other places), saw the emergence of agriculture and permanent human settlement,

  • As populations became larger and denser, forms of governance developed within and between communities, and a large number of civilizations have risen and fallen.
  • Humans have continued to expand, with a global population of over 8 billion as of 2023.
  • Genes and the environment influence human biological variation in visible characteristics, physiology, disease susceptibility, mental abilities, body size, and life span.

Though humans vary in many traits (such as genetic predispositions and physical features), any two humans are at least 99% genetically similar. Humans are sexually dimorphic : generally, males have greater body strength and females have a higher body fat percentage.

At puberty, humans develop secondary sex characteristics, Females are capable of pregnancy, usually between puberty, at around 12 years old, and menopause, around the age of 50. Humans are omnivorous, capable of consuming a wide variety of plant and animal material, and have used fire and other forms of heat to prepare and cook food since the time of Homo erectus,

Humans can survive for up to eight weeks without food and several days without water. Humans are generally diurnal, sleeping on average seven to nine hours per day. Childbirth is dangerous, with a high risk of complications and death. Often, both the mother and the father provide care for their children, who are helpless at birth,

Humans have a large, highly developed, and complex prefrontal cortex, the region of the brain associated with higher cognition. Humans are highly intelligent, capable of episodic memory, have flexible facial expressions, self-awareness, and a theory of mind, The human mind is capable of introspection, private thought, imagination, volition, and forming views on existence,

This has allowed great technological advancements and complex tool development to be possible through complex reasoning and the transmission of knowledge to subsequent generations. Language, art, and trade are defining characteristics of humans. Long-distance trade routes might have led to cultural explosions and resource distribution that gave humans an advantage over other similar species.

What will humans look like in 10,000 years?

READER QUESTION: If humans don’t die out in a climate apocalypse or asteroid impact in the next 10,000 years, are we likely to evolve further into a more advanced species than what we are at the moment? Harry Bonas, 57, Nigeria Humanity is the unlikely result of 4 billion years of evolution.

  • From self-replicating molecules in Archean seas, to eyeless fish in the Cambrian deep, to mammals scurrying from dinosaurs in the dark, and then, finally, improbably, ourselves – evolution shaped us.
  • Organisms reproduced imperfectly.
  • Mistakes made when copying genes sometimes made them better fit to their environments, so those genes tended to get passed on.

More reproduction followed, and more mistakes, the process repeating over billions of generations. Finally, Homo sapiens appeared. But we aren’t the end of that story. Evolution won’t stop with us, and we might even be evolving faster than ever, It’s hard to predict the future.

The world will probably change in ways we can’t imagine. But we can make educated guesses. Paradoxically, the best way to predict the future is probably looking back at the past, and assuming past trends will continue going forward. This suggests some surprising things about our future. We will likely live longer and become taller, as well as more lightly built.

We’ll probably be less aggressive and more agreeable, but have smaller brains. A bit like a golden retriever, we’ll be friendly and jolly, but maybe not that interesting. At least, that’s one possible future. But to understand why I think that’s likely, we need to look at biology.

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Did humans live with dinosaurs?

Human Ancestors Must Have Co-Existed With Dinosaurs, Researchers Say The researchers did an in-depth analysis of the fossil record A new study published in the journal says that human ancestors did live with dinosaurs for a short time before the beasts went extinct. The study says that early mammals evolved before a massive asteroid hit the planet 66 million years ago and therefore lived briefly with dinosaurs.

The researchers did an in-depth analysis of the fossil record for placenta mammals, which included humans, rabbits, dogs and bats. This has provided several answers to researchers regarding the long-debated question. The mammals survived until an asteroid marked the end of the Cretaceous Period and the reign of larger dinosaurs.

These mammals exploded in diversity, which led to the world we see today. “We pulled together thousands of fossils of placental mammals and were able to see the patterns of origination and extinction of the different groups,” says Emily Carlisle, a researcher at the University of Bristol, in a press release.

Ms Carlisle – along with other palaeontologists from the University of Bristol and the University of Fribourg analysed seven mammalian families with fossils extending dating back to 66 million years ago.The researchers discovered that Primates (the human lineage), Lagomorpha (rabbits and hares) and Carnivora (dogs and cats) evolved right before the mass extinction.”The model we used estimates origination ages based on when lineages first appear in the fossil record and the pattern of species diversity through time for the lineage,” co-author Daniele Silvestro from the University of Fribourg shared.Researchers believe that the lack of competition from dinosaurs allowed placenta mammals to evolve and diversify.

: Human Ancestors Must Have Co-Existed With Dinosaurs, Researchers Say

What will humans look like in 3000?

4. The skull will get bigger but the brain will get smaller – Humans in the year 3000 will have a larger skull but, at the same time, a very small brain. “It’s possible that we will develop thicker skulls, but if a scientific theory is to be believed, technology can also change the size of our brains,” they write.

How will humans look in 1,000 years?

(Artystarty/iStock) About 10,000 years ago, humans evolved a tolerance to cow’s milk; over the past 150 years, we’ve added 10 centimetres to our average height; and over the past 65 years, we’ve added 20 years to the average lifespan, mostly thanks to advances in science. We’ve come so far in such an incredibly short period of time, so what will we look like in another 1,000 years? In this episode of AsapSCIENCE, the boys run through some of the most exciting scientific breakthroughs that are being made today in order to propel our species into the future. First off, we humans have a reason to be as smug as we are – our brains are so good, even the most advanced computer system doesn’t even come close. In fact, in 2014 researchers used the K computer in Japan – one of the most powerful computers in the world – to simulate human brain activity, and it took 705,024 processor cores, 1.4 million GB of RAM, and 40 minutes to process the same amount of data processed by 1 second of brain activity. But we might not always have an edge over the machines we create. width=”700″ height=”414″ allowfullscreen=”allowfullscreen”> Scientists predict that in the future, computers will not only match the computational speed of the human brain, we’ll also develop artificial intelligence that can speak, interact, listen, and remember. Let’s just hope they don’t use all that information to turn against us. And as computers grow progressively more human, so too will humans become more integrated with robots. In the future, scientists predict that we’ll have minuscule robots called nanobots swimming around our bodies and enhancing our natural abilities. Known as transhumanism, this could see us no longer limited to what biology can be achieved, and the possibilities of that are pretty incredible to think about. And it’s not just our own bodies that technology has the potential to completely change. As the video points out, ‘utility clouds’ of microscopic robots could assemble themselves into entire buildings and them disassemble just as easily. “Picture your house disassembling when you leave in the morning so that space can be used for something else,” says AsapSCIENCE, In the next 1,000 years, the amount of languages spoken on the planet are set to seriously diminish, and all that extra heat and UV radiation could see darker skin become an evolutionary advantage. And we’re all set to get a whole lot taller and thinner, if we want to survive, that is. Why? I’ll let AsapSCIENCE explain that one in the video above, but let’s just say global warming is going to have a much bigger impact on our appearance than you might think. A version of this article was first published in October 2015.

Who lived 5,000 years ago?

Lasting roughly 2.5 million years, the Stone Age ended around 5,000 years ago when humans in the Near East began working with metal and making tools and weapons from bronze. During the Stone Age, humans shared the planet with a number of now-extinct hominin relatives, including Neanderthals and Denisovans.

Are humans still evolving?

Are Humans Still Evolving? – Perhaps we haven’t stopped after all. Broadly speaking, evolution simply means the gradual change in the genetics of a population over time. From that standpoint, human beings are constantly evolving and will continue to do so long as we continue to successfully reproduce. What has changed, however, are the conditions through which that change occurs.

Who is the first human?

Evolution of genus Homo – Main article: Homo The earliest documented representative of the genus Homo is Homo habilis, which evolved around 2.8 million years ago, and is arguably the earliest species for which there is positive evidence of the use of stone tools.

  • The brains of these early hominins were about the same size as that of a chimpanzee, although it has been suggested that this was the time in which the human SRGAP2 gene doubled, producing a more rapid wiring of the frontal cortex.
  • During the next million years a process of rapid encephalization occurred, and with the arrival of Homo erectus and Homo ergaster in the fossil record, cranial capacity had doubled to 850 cm 3,

(Such an increase in human brain size is equivalent to each generation having 125,000 more neurons than their parents.) It is believed that H. erectus and H. ergaster were the first to use fire and complex tools, and were the first of the hominin line to leave Africa, spreading throughout Africa, Asia, and Europe between 1.3 to 1.8 million years ago, A model of the phylogeny of H. sapiens during the Middle Paleolithic, The horizontal axis represents geographic location; the vertical axis represents time in millions of years ago, Homo heidelbergensis is shown as diverging into Neanderthals, Denisovans and H.

Sapiens, With the expansion of H. sapiens after 200 kya, Neanderthals, Denisovans and unspecified archaic African hominins are shown as again subsumed into the H. sapiens lineage. In addition, admixture events in modern African populations are indicated. According to the recent African origin of modern humans theory, modern humans evolved in Africa possibly from H.

heidelbergensis, H. rhodesiensis or H. antecessor and migrated out of the continent some 50,000 to 100,000 years ago, gradually replacing local populations of H. erectus, Denisova hominins, H. floresiensis, H. luzonensis and H. neanderthalensis, Archaic Homo sapiens, the forerunner of anatomically modern humans, evolved in the Middle Paleolithic between 400,000 and 250,000 years ago.

Recent DNA evidence suggests that several haplotypes of Neanderthal origin are present among all non-African populations, and Neanderthals and other hominins, such as Denisovans, may have contributed up to 6% of their genome to present-day humans, suggestive of a limited interbreeding between these species,

The transition to behavioral modernity with the development of symbolic culture, language, and specialized lithic technology happened around 50,000 years ago, according to some anthropologists, although others point to evidence that suggests that a gradual change in behavior took place over a longer time span.

Homo sapiens is the only extant species of its genus, Homo, While some (extinct) Homo species might have been ancestors of Homo sapiens, many, perhaps most, were likely “cousins”, having speciated away from the ancestral hominin line. There is yet no consensus as to which of these groups should be considered a separate species and which should be a subspecies; this may be due to the dearth of fossils or to the slight differences used to classify species in the genus Homo,

The Sahara pump theory (describing an occasionally passable “wet” Sahara desert) provides one possible explanation of the early variation in the genus Homo, Based on archaeological and paleontological evidence, it has been possible to infer, to some extent, the ancient dietary practices of various Homo species and to study the role of diet in physical and behavioral evolution within Homo,

Some anthropologists and archaeologists subscribe to the Toba catastrophe theory, which posits that the supereruption of Lake Toba on Sumatran island in Indonesia some 70,000 years ago caused global consequences, killing the majority of humans and creating a population bottleneck that affected the genetic inheritance of all humans today.

The genetic and archaeological evidence for this remains in question however. Nonetheless, on 31 August 2023, researchers reported, based on genetic studies, that a human ancestor population bottleneck (from a possible 100,000 to 1000 individuals) occurred “around 930,000 and 813,000 years ago,

Were there humans 500,000 years ago?

Human species who lived 500,000 years ago named as Homo bodoensis Researchers have announced the naming of a newly discovered species of human ancestor, Homo bodoensis. The species lived in about 500,000 years ago, during the Middle Pleistocene age, and was the direct ancestor of modern humans, according to scientists.

Scientists said that the epoch is significant because it was when anatomically contemporary humans, Homo sapiens, appeared in Africa and the, known as Homo neanderthalensis, in Europe.However, some paleoanthropologists have described this period as “the muddle in the middle” because human evolution during this age is poorly understood.Dr Mirjana Roksandic, of the University of Winnipeg in Canada and the study’s lead author, said: “Talking about human evolution during this time period became impossible due to the lack of proper terminology that acknowledges human geographic variation.”Under the new classification, Homo bodoensis will describe the majority of Middle Pleistocene humans from Africa and some from south-east Europe, while many from the latter continent will be reclassified as Neanderthals.Christopher Bae, from the department of anthropology at the University of Hawaii at Manoa and one of the co-authors of the study, said the introduction of Homo bodoensis is aimed at “cutting the Gordian knot and allowing us to communicate clearly about this important period in human evolution”.Roksandic concluded: “Naming a new species is a big deal, as the International Commission on Zoological Nomenclature allows name changes only under very strictly defined rules.”We are confident that this one will stick around for a long time, a new taxon name will live only if other researchers use it.”The findings are published in Evolutionary Issues News and Reviews.In August, the Guardian reported that archaeologists unearthed ancient DNA in the remains of a woman who died 7,200 years ago in, a discovery that challenged what was previously known about the migration of early humans.

The remains, belonging to a teenager nicknamed Bessé, were discovered in the Leang Panninge cave on the Indonesian island of Sulawesi. Initial excavations were undertaken in 2015. The discovery,, is believed to be the first time ancient human DNA has been discovered in, the vast chain of islands and atolls in the ocean between mainland Asia and Australia.

What will humans look like in 1 million years?

What Will Happen to Us in a Million Years? – If we compare it with what we were 10,000 years ago, we will find that the human body has added 10 centimetres on average to its height. In fact, it just happened in the past 150 years. Well, some races have reduced in height.

  1. We have also added nearly two decades of increased lifespan using science.
  2. Human evolution suggests how we have been using science to alter the way we evolve.
  3. We are the only species that use science as an evolutionary factor.
  4. We have added artificial elements to our environment resulting in certain physiological changes.

Researchers suggest that we are reducing in size as it is an evolutionary step for low energy consumption. It is evident from the morphological development of the animals in the forests and deep seas. The size of all animals has reduced considerably. It is because of the reduced food resources.

Similarly, the earth exploding from the human population will lead to a shorter version of human beings in the future. The future human evolution might signify that we will become shorter to reduce our energy consumption in a highly-populous world. We might also become highly dependent on technology and lose many of our physiological functions.

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Consider this example first. In the human evolution stages, when we were gatherers and hunters, we used to communicate using hand signs. Once we developed a unique thing called language, we started calling ourselves individually with names. Hence, remembering names was a feat we achieved.

In the same context, when we proceed to a million years of evolution of mankind, we might become a hybrid of physiology and cybernetic prosthetics. In science fiction terms, we might become cyborgs, a more durable form. Modern humans might be able to transform a human being into something else. We have implants and prosthetics to tackle various physiological problems.

These scientific advancements will take us a long way where we can literally change organs with mechanical ones. We might be able to replace eyes, ears, heart, etc with cybernetic prosthetics. We might become capable enough to move things with the implants in our brains.

Will humans evolve to fly?

The great white pelican has one of the widest wingspans known to scientists, measuring 3.6 meters across. This wingspan is strong enough to support the lesser weight of the bird. If humans were to fly, they would require wings so large that the weight of the wings themselves would prevent flight.

  1. Courtesy of
  2. Although mankind has conquered the skies with airplanes, we have yet to match up to our winged animal counterparts who fly on their own.
  3. And now, scientists have determined that we never will: it is mathematically impossible for humans to fly like birds.
  4. A bird can fly because its wingspan and the wing muscle strength are in balance with its body size.

It has a lightweight skeleton with hollow bones, which puts a smaller load on its wings. A bird also has air sacs connected to its lungs, which makes it even lighter and allows for easy passage of air through its lungs during flight. On the other hand, calculations of the ratio between human size and strength reveal that our species will never be able to take flight unaided.

As an organism grows, its weight increases at a faster rate than its strength. Thus, an average adult male human would need a wingspan of at least 6.7 meters to fly. This calculation does not even take into account that these wings themselves would be too heavy to function. There is a reason that a 6-year-old girl can do more pull-ups than her 40-year-old father — she may be weaker, but her strength-to-size ratio is still greater than her father’s ratio.

In other words, humans are not too large to fly, but our strength simply cannot support our weight in flight.

What will humanity be like in 500 years?

What will the world be like in 500 years? Our reporters researched what the world will be like in 500 years and gave their opinions First, let’s talk about the past. Think about how far we have come in technology and the potential we can do in the future.

Since the 1500s we have made mobile phones, airplanes, cars and many more! Who knows what we will create next. Even the clothes we wear and the food we eat has come a long way since then. In five hundred years technology should be more advanced but the world will be polluted due to the waste humans produce and it will be hot due to the Global warming.

If global warming keeps increasing at the rate it is the earth will be unfit for humans to live in. The human race may have dominated or even wiped out many species at which are vital for human existence. In five hundred years technology should be more advanced but the world will be polluted due to the waste humans produce and it will be hot due to the Global warming.

  • If global warming keeps increasing at the rate it is the earth will be unfit for humans to live in.
  • The human race may have dominated or even wiped out many species at which are vital for human existence.
  • A team of our reporters were sent out to interview students from Cranbrook school on the topic, we were given many varied answers and opinions, throughout our interviews the topics of technology and global warming came up as a big impact on the world.

Many people expressed their opinions on the topic of global warming and its impact, one student said that global warming will heat the world up to such an extent that the human race may have to be moved to another planet like earth or the sea will be colonised.

  • Some scientists predicted that an ice age is due to happen in the next five hundred years but that may not happen due to the world heating up from global warming.
  • A group of students mentioned that global warming will be solved and the world will be using renewable energy such as solar power and wind power.

Our team did some research into the topic and we found some information on biofacturing which will improve the world in the next 500 years, it will save live by growing organs and meat will be able to be sustained by growing it. It is thought that human brains will evolve to be more intelligent and bigger and the human race will grow to be taller and to live longer.

Will humans evolve to live longer?

Lifespan – Humans will almost certainly evolve to live longer —much longer. Life cycles evolve in response to mortality rates, how likely predators and other threats are to kill you. When mortality rates are high, animals must reproduce young, or might not reproduce at all.

  • There’s also no advantage to evolving mutations that prevent aging or cancer—you won’t live long enough to use them.
  • When mortality rates are low, the opposite is true.
  • It’s better to take your time reaching sexual maturity.
  • It’s also useful to have adaptations that extend lifespan, and fertility, giving you more time to reproduce.

That’s why animals with few predators—animals that live on islands or in the deep ocean, or are simply big—evolve longer lifespans. Greenland sharks, Galapagos tortoises, and bowhead whales mature late, and can live for centuries. Even before civilization, people were unique among apes in having low mortality and long lives,

  1. Hunter-gatherers armed with spears and bows could defend against predators; food sharing prevented starvation.
  2. So we evolved delayed sexual maturity, and long lifespans— up to 70 years,
  3. Still, child mortality was high— approaching 50 percent or more by age 15.
  4. Average life expectancy was just 35 years,

Even after the rise of civilization, child mortality stayed high until the 19th century, while life expectancy went down— to 30 years —due to plagues and famines. Then, in the past two centuries, better nutrition, medicine, and hygiene reduced youth mortality to under one percent in most developed nations.

Life expectancy soared to 70 years worldwide, and 80 in developed countries. These increases are due to improved health, not evolution—but they set the stage for evolution to extend our lifespan. Now, there’s little need to reproduce early. If anything, the years of training needed to be a doctor, CEO, or carpenter incentivize putting it off.

And since our life expectancy has doubled, adaptations to prolong lifespan and child-bearing years are now advantageous. Given that more and more people live to 100 or even 110 years ( the record being 122 years), there’s reason to think our genes could evolve until the average person routinely lives 100 years or even more.

Were there dragons on Earth?

Sebastian Apesteguia, paleontologist at the Azara Natural History Foundation – It depends on what you call a dragon. Many dragon-like animals existed in the Earth’s history. Some were really big reptiles, similar to the large monitor lizards that live in the Eastern Hemisphere today.

  • Others were clearly not lizards, though we have no physical remains.
  • The giant sister snakes Tren-Tren and Kai-Kai from Mapuche legends perhaps came from real dinosaur bones in Chile and Argentina.
  • The Mokele M’bembe from Congo is clearly not a lizard, and is proposed to be a living sauropod dinosaur.

But we have no more evidence than oral tradition yet. Let’s remember that dragons were constructed in mythology as humans evolved. Most of them were imagined as lizards with similar characteristics and attitudes. However, no large, flying, fire-making dragons probably existed.

Does the Bible say about dinosaurs?

Dinosaur fossils are fascinating. They have been discovered on every continent of the Earth, and hundreds of different species of dinosaurs have been classified. Sadly, many today accept a lie about the origin of these incredible animals. God’s Word, the Bible, tells us the truth about dinosaurs.

  1. Evolutionists teach that dinosaurs lived more than 200 million years ago.
  2. Their theory is that dinosaurs died off long before humans came on the scene.
  3. Some sudden catastrophe brought about their demise.
  4. Other evolutionists believe the dinosaurs eventually evolved into birds.
  5. But the Bible presents a far different perspective about dinosaurs.

According to the Bible, dinosaurs must have been created by God on the sixth day of creation. Genesis 1:24 says, “And God said, Let the earth bring forth the living creature after his kind, cattle, and creeping thing, and beast of the earth after his kind: and it was so.” The sixth day of creation was also the day when God created people (Genesis 1:26-27).

  1. Therefore, dinosaurs and people must have lived together on the earth at one time.
  2. Dinosaurs were also originally vegetarians.
  3. All animals were.
  4. Genesis 1:30 says, “And to every beast of the earth, and to every fowl of the air, and to every thing that creepeth upon the earth, wherein there is life, I have given every green herb for meat: and it was so.” That’s a big difference from most modern portrayals of dinosaurs.

When Adam and Eve sinned in the Garden of Eden by disobeying God’s command, death entered into the world. Romans 5:12 says, “Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned.” Death affected everything including the plants and animals.

  • The Bible says, “For we know that the whole creation groaneth and travaileth in pain together until now” (Romans 8:22).
  • Therefore, dinosaurs could not have died off before humans came on the scene.
  • Dinosaurs began to die after man sinned.
  • There was no death before humans.
  • If we accept evolution’s explanation of dinosaurs, we are forced to believe that death is not the result of sin.

The work of Jesus Christ on the cross to deal with sin and death becomes unnecessary. As history went on, the Bible tells us that God judged the world with a world-wide flood. He instructed Noah to build and ark to save his family and some animals. God told Noah, “And of every living thing of all flesh, two of every sort shalt thou bring into the ark, to keep them alive with thee; they shall be male and female” (Genesis 6:19).

A few small dinosaurs would have been on the ark. The larger species of dinosaurs were probably young and smaller on the ark. The rest of dinosaurs on earth were destroyed in the flood. Many of the dinosaur fossils were likely formed during and just after the flood. After the flood, dinosaurs on the ark likely reproduced in the earth, but life was not the same.

Climate changed on the earth (Genesis 8:22). Animals also became fair game for man. “Every moving thing that liveth shall be meat for you; even as the green herb have I given you all things” (Genesis 9:3). These factors along with disease and lack of food probably led to the extinction of dinosaurs.

Yet extinction may not have happened as long ago as many think. There are later descriptions of creatures in the Bible that could be referring to dinosaurs. One example is the behemoth of Job 40:15-19. Even in fairly modern history there are reports of creatures which seem to fit the description of dinosaurs.

When it comes to dinosaurs, there are two sides in conflict: evolution and the Bible. If we accept what evolution says about dinosaurs, then the Bible cannot be our authority. It cannot be trusted. It can be ignored as a moral standard as it is all across America today.

Would humans exist if dinosaurs didn’t go extinct?

What if the Dinosaurs Hadn’t Gone Extinct? | Museum of Science, Boston We chat with Becca, one of our Museum educators, about the driving factors behind the disappearance of the dinosaurs during this Pulsar podcast brought to you by #MOSatHome. We ask questions submitted by listeners, so if you have a question you’d like us to ask an expert, send it to us at [email protected].

ERIC: After hundreds of millions of years, the time of the dinosaurs ended quickly and dramatically. Today on Pulsar, we’re asking one of our own educators, Becca, one of the most common questions we get at the Museum of Science. What happened to the dinosaurs? I’m your host, Eric. Thanks to Facebook Boston for supporting this episode of Pulsar.

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Becca, thanks for joining us, again, on the podcast. BECCA: Thanks for having me, Eric. ERIC: So I know the extinction of the dinosaurs is one of your favorite things to talk about. We have lots of great questions for you. But let’s start with the reign of the dinosaurs.

  • Elias wants to know what the first dinosaur was and when it appeared.
  • BECCA: Yeah.
  • You’re absolutely right.
  • I absolutely love talking about dinosaurs.
  • But when it comes to the very beginning of the dinosaur reign, it is a little bit debated, mainly because scientists aren’t entirely sure what the very first dinosaurs were.

In fact, there are quite a few that scientists think were very early on in the Triassic period, approximately 220, maybe 240 million years ago. But no one’s totally sure. One of the dinosaurs that people think might be the oldest one is Nyasasaurus parringtoni, which was approximately 245 to 240 million years ago.

So that would be incredibly old. But some people don’t necessarily think it was even a dinosaur. It might just be a very close reptile relative. So if you take that into consideration, well, it might not be that one. It may be one a little bit closer to home, like Coelophysis, which was in North America from approximately 220 to 200 million years ago.

A little bit more dinosaur-like based on scientists’ different observations. But again, it’s one of those really heavily debated areas. ERIC: So we don’t know exactly when they first appeared. What about when they went extinct? Do we know that date with a little more certainty? BECCA: We definitely do.

  • We know that it was approximately sometime 65 to 66 million years ago.
  • So that’s a little bit more certain that it fell right within that 1-million-year range. ERIC: OK.
  • So the reason we’re here.
  • What happened to the dinosaurs? Why did they go extinct? BECCA: Yes, that is the question.
  • And it wasn’t even the easiest thing to answer for a very long time.

There were a lot of different theories. But the theory that is now most supported by evidence is that there was a giant impact – a meteor or asteroid. Something from space hit the Earth just about 65 million years ago. And it caused a whole bunch of problems but, ultimately, led to the demise of about 75% of life on Earth.

ERIC: And we got a question from Amber about this object. How big was it? How huge does an impactor have to be to wipe out that much of the life on an entire planet? BECCA: Yeah. This object was large. In fact, scientists estimate it was probably almost the size of Boston and was actually about six to nine miles wide.

So that was a very, very large space rock that came. And it hit just off of the Yucatán Peninsula. ERIC: Now, this was a cataclysmic event, but it was a really, really long time ago. What evidence led us to believe that an impact ended the time of the dinosaurs? BECCA: Yeah.

  • That’s a really great point.
  • We definitely have been able to see most of this 93-mile-long crater called the Chicxulub crater.
  • But scientists, just last September in 2019, were able to drill into the Chicxulub crater and take out a 130-meter rock core sample And they were able to determine, based on those rocks, what happened.

The rocks provided evidence that there were tsunamis. There were wildfires. There was a lot of, even, melted rock in that area. So that would have affected the dinosaurs in the local area, but they also gave us evidence that a lot more happened after the impact that caused most of that extinction.

  • ERIC: So locally, it was immediately devastating.
  • What happened, on a longer time scale, to life around the globe, and how long did that take? BECCA: Yeah.
  • Excellent question.
  • And certainly, many of the dinosaurs did go extinct on impact, especially if you were in the Yucatán Peninsula.
  • That was an area that was very heavily hit.

But after that, what scientists noticed in this rock core sample is that minerals, like sulfur, salt, and gypsum, were all missing from the crater, which means that they went up into the atmosphere. They vaporized on impact. And they blocked out sunlight.

  1. And that sunlight couldn’t really get through to the plants.
  2. The plants couldn’t really produce as much energy as they could before.
  3. Herbivores couldn’t find as much food as they needed to survive.
  4. And ultimately, the larger ones died off.
  5. Carnivores couldn’t find as much to eat- herbivores or other carnivores- and ultimately, they were not able to survive.

And so, really, it was this extreme sort of rapid climate change from all of the debris in the atmosphere that caused most of that extinction. Now, anywhere from probably minutes to hundreds, thousands, tens of thousands of years after this impact is what this extinction probably was.

It wasn’t necessarily about every single dinosaur went extinct on impact. But in fact, many of them, not being able to find enough food over thousands of years, ultimately died off. ERIC: More gradual than we typically think of, but still really fast on a geologic scale. We did get a question from Logan, who wanted to know about other species that went extinct at this time.

So can you talk about how other kinds of life on Earth managed during this period? BECCA: Sure. So while we don’t know exactly how many species of dinosaurs went extinct, we do know not all of them did and that some of them went to go on to become our modern-day birds.

  1. But again, it wasn’t just the dinosaurs.75% of life on Earth included plants.
  2. It included other types of reptiles.
  3. It included mammals.
  4. And not all of the animals across all of these categories went extinct.
  5. But certainly, a majority of the life on this planet at that time didn’t make it past this time period.

ERIC: So what was it about certain species of plants or animals that allowed them to survive this post-impact period? Was there a pattern of which ones disappeared and which ones didn’t? BECCA: There seems to be a little bit of one. And of course, it’s different per different category of animals.

But the more small the animal was, the better it tended to do because it could find more food. So some of those smaller, more avian-like dinosaurs did pretty well, and they were able to find enough food and continue on and eventually evolve to modern-day birds. But also, some of the smaller, more generalized mammals did really well.

In fact, they no longer had giant dinosaurs trying to eat them, and they could find enough food. So they went on to thrive and fill all of the ecological niches that the dinosaurs once held and evolve into lots of different types of mammals. ERIC: If some of the dinosaurs survived and evolved to become today’s birds, what did they look like at the time of this extinction event? Did they already look a little bit like birds? BECCA: We do think that some of them looked a little bit like birds.

  1. In fact, we think that birds, with their current feathers covering their body, came a little bit from the dinosaurs.
  2. We think that dinosaurs, right before this extinction, had already developed some feathers.
  3. In fact, you may have heard that people think the T-Rex had feathers on it.
  4. And certainly, quite a few other smaller raptors probably had feathers if not were completely covered in them.

So a lot of those characteristics on these smaller birds continued through the evolution of current, modern-day birds, including that look of this sort of smaller raptor covered in feathers. ERIC: Now, avian dinosaurs and mammals have changed a whole lot since this time.

  • Are there any animals that survived this extinction event that haven’t changed in all that time? BECCA: There definitely are.
  • You may have heard that animals like crocodiles and alligators have basically been unchanged for this whole time, but also animals like sharks and other sort of animals that really haven’t evolved because they haven’t needed to.

They’ve been incredibly successful since, basically, the time of the dinosaurs for the past many, many millions of years, and they continue to thrive doing pretty much exactly the same thing. ERIC: Now that we’ve heard all about this major change in the Earth’s history, I want to ask you a question from John.

  • He wanted to know, what would have happened if the dinosaurs hadn’t gone extinct? If that impactor had missed the Earth, what would our planet be like today? BECCA: This is one of my favorite questions because it’s something I often wonder about myself.
  • I love dinosaurs, but I also know that if the dinosaurs were still around today, life would be extremely different.

In fact, one of the things that I think about is that if dinosaurs hadn’t gone extinct at this time period, the mammals probably wouldn’t have had the same opportunity to kind of take over the world. They would not be able to fill all of those ecological niches that those dinosaurs once filled.

  • They would still probably be small, scrawny, and very generalized.
  • But instead, the mammals were able to evolve and diversify and, well, ultimately, millions of years later, become some humans.
  • So perhaps we would not have been here if it weren’t for this extinction event 65 million years ago.
  • ERIC: Well, thanks so much, Becca, for answering so many questions about the extinction of the dinosaurs.

BECCA: Thank you, Eric. That was fun.

ERIC: You can learn so much more about dinosaurs in the Blue Wing of the Museum of Science at our permanent exhibit, Dinosaurs- Modeling the Mesozoic, featuring a full-scale Tyrannosaurus rex model and Cliff, one of the only near-complete Triceratops fossils on display anywhere in the world.You can visit to support the Museum of Science and MOS at Home. Until next time, keep asking questions. Theme song by Destin Heilman

: What if the Dinosaurs Hadn’t Gone Extinct? | Museum of Science, Boston

Who was the first person to born in the world?

Who is the first person that born in the world? The First Person Born in the World It is impossible to determine who the first person born in the world was. The reason for this is that humans have evolved over millions of years, and there was no specific point in time where a “first human” was born.

  • Instead, humans evolved gradually over time, with each generation being slightly different from the one before it.
  • The Evolution of Humans The history of human evolution dates back millions of years.
  • The earliest human-like creatures, known as hominids, lived in Africa around 6 million years ago.
  • Over time, these hominids evolved and gave rise to various species of humans, including Homo erectus, Homo neanderthalensis, and Homo sapiens.

The Origin of Homo Sapiens The earliest known species of Homo sapiens, or modern humans, lived in Africa around 300,000 years ago. These early humans had many physical and genetic differences from modern humans, but they were still considered to be the same species.

  • The Spread of Humans As humans evolved and developed new technologies, they began to spread out from Africa and populate other parts of the world.
  • The earliest evidence of humans outside of Africa dates back around 100,000 years ago, when Homo sapiens began to migrate into Asia and Europe.
  • The Importance of Human Evolution The evolution of humans has been a long and complex process.

It has led to the development of modern humans with unique abilities, such as language, culture, and technology. Understanding the history of human evolution can help us understand who we are and where we come from. In conclusion, while it is impossible to determine who the first person born in the world was, the history of human evolution is a fascinating and important topic that continues to be studied by scientists and researchers around the world.

  1. Who is the first person that born in the world? According to the creation myth of the Abrahamic religions, he was the first man.
  2. In both Genesis and Quran, Adam and his wife were expelled from a Garden of Eden for eating the fruit of the tree of knowledge of good and evil.
  3. Various forms of creationism and biblical literalism consider Adam to be a historical person.

To make sure you are not studying endlessly, EduRev has designed Class 5 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 5.

How long after the dinosaurs did humans appear?

No! After the dinosaurs died out, nearly 65 million years passed before people appeared on Earth. However, small mammals (including shrew-sized primates) were alive at the time of the dinosaurs. Some scientists who study dinosaurs (vertebrate paleontologists) now think that birds are direct descendants of one line of carnivorous dinosaurs, and some consider that they in fact represent modern living dinosaurs.

Trek through Time The Geologic Time Spiral