The extraordinary Native American resistance effort may have faded from the headlines but the U.S. government continues to prosecute activists, who say it is destroying lives.

Have they heard about Puerto Rico?

Do you really know how that fish wound up on your plate?

It's been 30 years since Hansen testified to Congress that the age of climate change had arrived.

Can removing snails from corals help them withstand climate change?

A new study shows U.S. drinking water is contaminated with high levels of chemicals that are harmful to humans -- even in very low doses.

Even ExxonMobil and Shell support the plan.

The Koch-funded Americans for Prosperity has been fighting public transit across the country for years. Here's where they've succeeded and failed.

Torrential rains are flooding south Texas, where hundreds of child migrants are detained.

New research shows that after a local power plant closed, reproductive health improved among residents of Bayview-Hunters Point.