Palaeontology

Biologists Replicate Key Evolutionary Step in Life on Earth

The transition to multicellular life has long intrigued evolutionary biologists. The cells in our bodies have evolved to cooperate with exquisite precision. The human body has more than 200 types of cells, each dedicated to a different job.

Siberia was a wildlife refuge in the last ice age

The permanently frozen soil of Siberia, Canada and Alaska preserves the DNA of prehistoric plants, fungi and animals.

Does Primitive Claw Disqualify So-Called 'Missing Link' Candidate?

Can the presence or absence of a lemur-like grooming claw help determine where adapiforms -- early primates recently hailed as the "missing link" -- should be placed on humans' family tree? Researchers seeking to answer the question found that the extinct creatures' toe bones m …

Discovery of tooth challenges 'out of Africa' theory

Great apes survived in Europe for two million years longer than previously thought, study of a tooth has revealed. Scientists from Germany, Bulgaria and France say the hominid pre-molar, discovered near the Bulgarian town of Chirpan, is seven million years old. Up to now, i …

Simpler times: did an earlier genetic molecule predate DNA and RNA?

In the chemistry of the living world, a pair of nucleic acids -- DNA and RNA -- reign supreme. But this may not always have been so.

Earth's massive extinction: The story gets worse

Scientists have uncovered a lot about the Earth's greatest extinction event that took place 250 million years ago when rapid climate change wiped out nearly all marine species and a majority of those on land.

How Climate Change Has Driven Species Evolution -- and Could Drive Extinction

Climate change -- even drastic climate change -- isn't new for the planet. But something else is: us.

Wolf-to-dog transition had little to do with humans, ancient skull suggests

The "extraordinary preservation" of a 33,000-year-old skull — found in a cave in southern Siberia — has helped show that dog domestication "was, in most cases, entirely natural" and not really a "human accomplishment," says evolutionary biologist Susan Crockford.

Climate change and human evolution

"Climate change has been a major player in our evolution," said Chris Stringer of London's Natural History Museum and author of The Origin of Our Species.

Man Evolved When Elephant Meat Ran Out

Dietary change led to the appearance of modern humans in the Middle East 400,000 years ago, say archeology researchers from Tel Aviv University.

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