Catrin Einhorn

Free-ranging cats hunt or scavenge more than 2,000 species, some of them imperiled, according to a new study.

A global update from the leading authority on the status of species shows that climate change is compounding other threats to plants and animals.

The research, which comes with important caveats, was partly an effort to address the scientific uproar surrounding an earlier paper.

Officials held off on making a decision about the elusive bird, saying they still need to examine the evidence, including grainy video.

A new court settlement will put the Environmental Protection Agency on track to regulate pesticides more tightly.

A conservationist and a neighbor defended the center, part of an effort to save the state’s native birds from extinction, until firefighters arrived.

Scientists say they’ve compiled evidence showing that the ivory-billed woodpecker, a kind of Holy Grail for American birders, still exists.

A creative debt restructuring will save the country money and create a fund to protect waters around the Galápagos Islands.

A reader wanted to attract pollinators and foster biodiversity without spending a bundle to redo her property. We’ve got tips.

Sunflower sea stars, hit by a “climate-fueled pandemic,” play a key role in keeping marine ecosystems balanced.