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Penguin parents sleep for just a few seconds at a time to guard newborns, study shows

Earth is running a fever. And UN climate talks are focusing on the contagious effect on human health

Breaches by Iran-affiliated hackers spanned multiple U.S. states, federal agencies say

Still alive! Golden mole not seen for 80 years and presumed extinct is found again in South Africa

Hurricane season that saw storms from California to Nova Scotia ends Thursday

A six-planet solar system in perfect synchrony has been found in the Milky Way

US moves to protect wolverines as climate change melts their mountain refuges, threatens extinction

Climate contradictions key at UN talks. Less future warming projected, yet there’s more current pain

How did humans get to the brink of crashing climate? A long push for progress and energy to fuel it