Last year, hiking in Morocco’s eastern Atlas Mountains, I found an ammonite, a fossil of those spiral-shape cephalopods that to many symbolize paleontology itself. The fossilization process had turned ...

Anthropogenic extinction, which is driven by human activities, poses a severe threat to biodiversity worldwide. Professor Bridget B. Baker of the University of Florida's Wildlife Ecology and ...

Quick Take Sudan, the last male northern white rhino, died, underscoring extinction and the emotional toll on caretakers.

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