Tibetan Plateau was larger than previously thought, geologists say

Graduate student brings extinct plants to life

Halite

Rare fossilized embryos more than 500 million years old found

Reef fish arrived in two waves, before and after mass extinction...

Gyrolite

Mars: Gusev Crater once held a lake after all, scientist says

Gypsum

Scientists reconstruct ancient impact that dwarfs dinosaur-extinction blast

Study tests theory that life originated at deep sea vents

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