Bisti/De-Na-Zin Wilderness in New Mexico after sunset. Credit: Sean Pavone / For centuries, travelers and historians have ...
If you trace the animal family tree back through the fossil record, the trail usually goes cold about 539 million years ago. Before this boundary—the start of the famous Cambrian explosion—multicelled ...
A treasure trove of fossils from China shows that the Cambrian explosion may have been less explosive than scientists once ...
From White Sands and the Great Sand Dunes to Bryce, Bisti, Bonneville, and Petrified Forest, these 10 U.S. landscapes feel almost extraterrestrial, shaped not by lava but by gypsum, salt, sandstone, ...
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