The Apennine brown bear is a small population found only in central Italy, with a long history of closeness to human communities.

Global warming and intensifying wildfires are disrupting dragonfly mating patterns, threatening to push some species toward local extinction.

The reptiles had such an "immense" impact on the planet that their sudden exit led to wide-scale changes.

Scientists analyzed microbial DNA from 483 mammoth specimens, of which 440 were sequenced for the first time.