Trump’s border wall would imperil some of the most diverse ecosystems in two countries.

September 16 marks the anniversary of perhaps the most successful achievement in environmental policy.

We have to work together to solve climate change and other environmental problems, says author David Biello.

People around the world are struggling with wildfires and floods and other crises, but I don’t give up hope.

Ewaso Lions founder Shivani Bhalla aims to help people learn to live with local predators.

Science shows that killing wolves does more harm than good.

Research in Costa Rica illustrates the value of monkey social behavior — and of stolen bananas.

We’ll use 1.7 Earths’ worth of resources this year. Can six pledges make a difference?

It's not just your personal choices. Global policy also matters, according to new research.

Saving freshwater mussels requires scrappy scientists and unlikely allies.