Al Larson has spent four decades building hundreds of nest boxes for Western and Mountain Bluebirds. Now these homes and their inhabitants are facing the test of climate change.

Predators now wipe out 70 percent of shorebird nests in the far north, a shift in historical patterns that scientists pin on climate change.

An analysis of campaign spending on I-1631 finds a $15-million grassroots effort up against $31 million of out-of-state oil money.

In Honduras, species are migrating upslope to escape deforestation and climate change, illustrating a global trend. But space isn't infinite.

And yet, despite warming twice as fast, our parks still remain the best protection for wildlife adjusting to changing environments.

A new report warns that we're approaching the point of no return—a fact that close observers of nature have known for years.

To protect climate-threatened Hooded Grebes, volunteers camp out at remote, high-elevation lakes in Patagonia for the entire breeding season.

Across the Arctic, late snowmelt wrecked the breeding season for many shorebird species already experiencing major declines.

Marrying public art and climate change, six new species become ambassadors for conservation on the streets of northern Manhattan.

If the SCOTUS nominee takes the bench by October 1, his vote will likely decide if endangered species law can protect wildlife in a changing climate.