Grief for an animal at the end of its life is unlike any other emotion. It cleaves a depthless void that feels empty and hollow. It’s a feeling that animal keepers and caretakers know well, but it’s ...

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 ...

After more than 12,000 years, dire wolves are back. On April 8, 2025, Colossal Biosciences announced the birth of three healthy dire wolf pups, marking the world’s first successful de-extinction of a ...