The momentum for 100 percent clean energy in Washington state is at a high, thanks in large part to local advocacy efforts.

A government report claims that extracting 120 million barrels of oil from the Arctic Ocean will lower global carbon emissions. Economists disagree.

Guided by science, coastal hubs like the Bay Area are building in resiliency before disaster ensues.

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.