Footprints found in New Mexico were dated to roughly 23,000 years old - about 10,000 years before humans were thought to be ...

Butterflies are fragile and vulnerable to predation by all kinds of critters, from birds to reptiles to spiders to other ...

Tiny bone fragments from Alaska suggest birds started breeding and nesting in the Arctic 30 million years earlier than ...

Several key moments in Earth's history help us humans answer the question "How did we get here?" These moments also shed ...

A new study reveals that the aerobic nitrogen cycle in the ocean may have occurred about 100 million years before oxygen began to significantly accumulate in the atmosphere, based on nitrogen isotope ...

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