This year we bid farewell to two lost frogs, the Chinese paddlefish, a plant from New Hampshire, and many others.

This will be a critical year for several endangered and threatened species, as well as a time of opportunity for others.

Environmentalists and journalists tend to describe beavers in the ways they benefit humans. It’s time to change that perception of nature.

Lost in much of the coverage of the region’s water woes is the ecological crisis caused by prolonged drought, climate warming and development.

These weasel-like small cats haven’t been documented in the country since 1986. A new study suggests it’s time to reintroduce them.

Despite their reputation as destructive pests, new research reveals that armadillos support dozens of other species — including, possibly, humans.

Can state agencies ensure conservation when hunters pay the bills and ranchers determine wildlife policy?

New research suggests understanding species’ social learning and adaptive strategies can make them partners in their salvation.

A new book digs through dark caves and historical documents to tell the story of the now-extinct giant short-faced bear, which disappeared around the time of the mammoths.

New research shows that oil drilling in Canada’s boreal forest is changing how wolves, caribou, bears and other species interact.