A summer of extremes leaves sobering questions about the state of Earth’s largest store of ice, capable of inundating coastlines worldwide as it melts.

The Trump administration wants to gut the National Environmental Policy Act, a move that would silence community criticism of destructive projects and give more power to industry.

Emerging efforts by cities and the federal government show that progress is possible, but experts say systemic changes are still needed.

As remote Alaska warms and melts, it kicks off changes that will affect global systems and worsen climate change.

Many of the gray whales found dead this year have suffered from malnutrition. Researchers are rushing to find the cause.

The deeply unpopular plan would benefit a few rich oil companies while threatening people, wildlife and the climate.

When something dies in nature, it becomes part of a system that gives life. Can humans re-embrace the same concept?

In Idaho, a breathtaking new reserve promises to preserve the darkness — and shows how other communities can follow.

The documentary Cascades Crossroads showcases the hard work — and compromises — necessary to protect migrating animals from deadly highways.

A Republican bill threatens to open up federal wilderness areas to mountain biking — and in the process threatens the 1964 Wilderness Act.