Recent Posts by Pangaea Biosciences

Humans May Have Dispersed Out of Africa Earlier Than Thought

Modern humans may have dispersed in more than one wave of migration out of Africa, and they may have done so earlier than scientists had long thought, researchers now say. Modern humans first arose between 100,000 and 200,000 years ago in Africa. But when and how the modern human lineage then dispersed out of Africa…
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Neanderthals Had Shallow Gene Pool, Study Says

Neanderthals were remarkably less genetically diverse than modern humans, with Neanderthal populations typically smaller and more isolated, researchers say. Although¬†Neanderthals¬†underwent more genetic changes involving their skeletons, they had fewer such changes in behavior and pigmentation, scientists added. Modern humans are the only humans alive today, but Earth was once home to a variety of other…
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Impact glass from asteroids and comets stores biodata for millions of years

Bits of plant life encapsulated in molten glass by asteroid and comet impacts millions of years ago give geologists information about climate and life forms on the ancient Earth. Scientists exploring large fields of impact glass in Argentina suggest that what happened on Earth might well have happened on Mars millions of years ago. Martian…
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New study outlines ‘water world’ theory of life’s origins

Life took root more than four billion years ago on our nascent Earth, a wetter and harsher place than now, bathed in sizzling ultraviolet rays. What started out as simple cells ultimately transformed into slime molds, frogs, elephants, humans and the rest of our planet's living kingdoms. How did it all begin? A new study…
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Tiny fossils found in China appear to be 500-million-year-old embryos

Tiny, spherical fossils found in southern China appear to be the embryos of a previously unknown animal. The fossils come from the Cambrian, a period dating from 540 million to 485 million years ago and known for an explosion of diversity. Some of the organisms that appeared during the Cambrian, such as the bug-like trilobite,…
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Drunken Monkeys: Does Alcoholism Have an Evolutionary Basis?

As the child of an alcoholic father, Robert Dudley long wondered what caused the destructive allure of alcohol. Then while working in the Panamanian forest as a biologist, Dudley saw monkeys eating ripe fruit, which likely contained small amounts of the stuff, and an answer occurred to him: Maybe alcoholism is an evolutionary hangover. Had…
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Salamanders Shrink as Climate Heats Up

Wild salamanders that live in the Appalachian Mountains are shrinking because they must burn more energy as the local climate gets hotter and drier, according to a new study. Researchers found that the salamanders they collected between 1980 and 2012 were 8 percent smaller than those collected in earlier decades, starting in 1957. The findings…
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Finding Your Inner Fish

Dr. Neil Shubin, an Univeristy of Chicago Evolutionary Paleontologist explains how we all contain over 3.5 million years of history in every part of our human bodies. Learn how this fascinating history unfolded in this installment of the Darwin Evolves series from UCLA. Series: Darwin Evolving.  
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4-Eyed Daddy Longlegs Helps Explain Arachnid Evolution

The ancient ancestors of today's harvestmen, the spider-like arachnids sometimes called "daddy longlegs," had not just one, but two sets of eyes, a newfound fossil reveals. The recent discovery of this harvestman fossil in eastern France may shed light on the evolution of these arachnids, which can be found on every continent except Antarctica, the…
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