"No matter what we do in nature, there will be winners and losers, but we are seeing a lot of losers." Scientists issue dire warning that 'half the tree of life' is dangerously close to extinction: ...

While the grub itself may be long gone, a record of dinosaurs' favorite foods has been stowed away in their ancient tooth ...

A fossilized brain from a 500-million-year-old sea creature shows unexpected spider-like features, hinting that spiders and their kin may have evolved in the ocean—not on land.