Life
Mammal ancestors were giving birth to live young 236 million years ago
Almost all mammals give birth rather than laying eggs, and we have new clues about when they began to do so
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Life
Spectacular fossil preserves internal organs of ancient marine reptile
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Earth
Asteroid strike caused global firestorm that incinerated the dinosaurs
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Life
Sabre-toothed cats could crunch through bone
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Life
The Dinosaur Extinction Was More Complicated Than You Think
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Life
A worm that lived half a billion years ago preferred turning right
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Life
Fossil fruits show flowering plants flourished in time of dinosaurs
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Life
Remarkable fossils rewrite the story of how animals conquered the land
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Life
Frozen squirrel scat preserves ancient DNA from hundreds of species
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Earth
Dinosaur-killing asteroid impact site stayed hot for millions of years
Drill cores at the impact site of the Chicxulub asteroid show evidence that, alongside widespread destruction, the collision created a vast underground ecosystem filled with hot water that sheltered microbial life
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Life
We may finally know why dinosaurs like T. rex evolved tiny arms
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Life
Extinct relative of koalas discovered in Western Australia
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Life
Why birds are the only surviving dinosaurs
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Life
Largest-ever octopus was great white shark of invertebrate predators
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