Scientists reveal how first cells could have formed on Earth

Roughly 4 billion years ago, Earth was developing conditions suitable for life. Origin-of-life scientists often wonder if the type of chemistry found on the early Earth was similar to what life requires today. They know that ...

How fish evolved to walk

When you think about human evolution, there's a good chance you're imagining chimpanzees exploring ancient forests or early humans daubing wooly mammoths on to cave walls. But we humans, along with bears, lizards, hummingbirds ...

Tiny flakes tell a story of tool use 300,000 years ago

When prehistoric people re-sharpened cutting tools 300,000 years ago, they dropped tiny chips of flint—which today yield evidence of how wood was processed by early humans. The small flint flakes were discovered at the ...

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