Saving freshwater mussels requires scrappy scientists and unlikely allies.

The Old-Growth Forest Network works to protect America’s shrinking woodlands.

Director Jeff Orlowski’s documentary "Chasing Coral" is visual evidence from the front lines of a planet falling apart.

An investigation finds many appointees with potential conflicts of interest.

Fewer than 30 of these rare porpoises remain. Can their extinction be prevented?

What better way to understand the dangers of plastic pollution than by traveling on a ship made out of garbage?

Has Mexico finally taken the step that will save the vaquita from extinction? Or will it not be enough?

Check out Al Gore’s “Sequel” plus books about birds, disasters and pollution.

…and one really important reason why they should.

Bluff and Blanding represent diametrically opposing views over the future of the national monument and its Indian ruins.