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Did Lower Testosterone Help Civilize Humanity?

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A study of 1,400 ancient and modern human skulls suggests that a reduction in testosterone hormone levels accompanied the development of cooperation, complex communication and modern culture some 50,000 years ago.

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Lead in Teeth Can Tell a Body’s Tale, UF Study Finds

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Your teeth can tell stories about you, and not just that you always forget to floss.

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Smithsonian Scientist and Collaborators Revise Timeline of Human Origins

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A large brain, long legs, the ability to craft tools and prolonged maturation periods were all thought to have evolved together at the start of the Homo lineage as African grasslands expanded and Earth’s climate became cooler and drier. However, new climate and fossil evidence analyzed by a team of researchers suggests that these traits did not arise as a single package. Rather, several key ingredients once thought to define Homo evolved in earlier Australopithecus ancestors between 3 and 4 million years ago, while others emerged significantly later.

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Insect Diet Helped Early Humans Build Bigger Brains, Study Suggests

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Figuring out how to survive on a lean-season diet of hard-to-reach ants, slugs and other bugs may have spurred the development of bigger brains and higher-level cognitive functions in the ancestors of humans and other primates, suggests research from Washington University in St. Louis.

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In Human Evolution, Changes in Skin’s Barrier Set Northern Europeans Apart

The popular idea that Northern Europeans developed light skin to absorb more UV light so they could make more vitamin D – vital for healthy bones and immune function – is questioned by UC San Francisco researchers in a new study published online in the journal Evolutionary Biology.

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To Avoid Interbreeding, Monkeys Have Undergone Evolution in Facial Appearance

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Old World monkeys have undergone a remarkable evolution in facial appearance as a way of avoiding interbreeding with closely related and geographically proximate species, researchers from NYU and the University of Exeter have found. Their research provides the best evidence to date for the role of visual cues as a barrier to breeding across species.

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Humans & Monkeys of One Mind When It Comes to Changing It

Covert changes of mind can be discovered by tracking neural activity when subjects make decisions, researchers from New York University and Stanford University have found. Their results, offer new insights into how we make decisions and point to innovative ways to study this process in the future.

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Humans Have Been Changing Chinese Environment for 3,000 Years

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A widespread pattern of human-caused environmental degradation and related flood-mitigation efforts began changing the natural flow of China’s Yellow River nearly 3,000 years ago, setting the stage for massive floods that toppled the Western Han Dynasty, suggests new research from Washington University in St. Louis.

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‘Smoking Gun’ Ancient Coins Are Being Looted from Excavations — and Too Few Coin Scholars Are Firing Back, Baylor Expert Says

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Millions of ancient looted coins from archaeological excavations enter the black market yearly, and a Baylor University researcher who has seen plundered sites likens the thefts to stealing “smoking guns” from crime scenes. But those who collect and study coins have been far too reluctant to condemn the unregulated trade, he says.

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Baylor Anthropologist Chimes in on Humanitarian Crisis and Rising Death Toll on the U.S.-Mexico Border

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