This illustrated geologic timescale of Earth focuses on the landscapes, flora and fauna of the West, drilling into the region’s deep history.
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Scientists record coldest ocean temperature ever in Earth's history—and wonder how life survived
About 700 million years ago, Earth was entombed in a veneer of ice hundreds of feet thick—a frozen state scientists refer to ...
New findings from NASA's Perseverance rover have revealed evidence of wave-formed beaches and rocks altered by subsurface ...
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