Plate tectonics may be why Earth has life — and the key to finding life elsewhere in the universe

Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than ...
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Dating Back 13,000 Years, One Of The Earliest Uses Of Blue Pigment Has Been Unearthed

When archaeologists brushed away the dirt from a prehistoric artifact in Germany, they were startled to see a shimmer of extremely rare color. Clinging to the stone’s surface were flecks of deep, ...