Prehistoric winged lizard unearthed in Chile

Chilean scientists have announced the discovery of the first-ever southern hemisphere remains of a type of Jurassic-era "winged lizard" known as a pterosaur.

Life on an airless Earth

In hidden pockets around the world, tiny creatures consume toxins and wait for their day to again rule the Earth.

Human genetics: A look in the mirror

Who are we? Where did we come from? How did we get here? Throughout the ages, humans have sought answers to these questions, pursuing wisdom through religion, philosophy, and eventually science. Evolutionary analyses published ...

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