New study upends a theory of how Earth’s mantle flows

Warming pulses in ancient climate record link volcanoes, asteroid impact and...

Mammals diversified only after dinosaur extinction left space

Ostrich relative lived in North America about 50 million years ago

Lush Venus? Searing Earth? It could have happened

Scientists isolate, culture elusive Yellowstone microbe

First fossil facial tumor discovered in a dwarf duck-billed dinosaur from...

Massive landslide detected in Glacier Bay’s fragile mountains

State budgets $10 million for earthquake early warning

Where Do Rubies Come From?

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