World leaders insist President Trump’s decision to withdraw the U.S. from the Paris agreement will not deter other nations from carrying out their commitments.

Do you recall the sequence in Steven Spielberg’s 1977 film "Close Encounters of the Third Kind," where frantic scientists run up and down the scales on some sort of giant synthesizer, hoping for a communications breakthrough with aliens that are hovering like gods over Wyoming?

At the dawn of the Second World War, while Hitler’s forces consolidated in Europe and Imperial Japan expanded into China and prepared its assault on the Pacific, the United States sat relatively idle.

In announcing his decision to withdraw from the Paris accord, President Trump cast it as a matter of putting America first.

There has been an important development in the big crack cutting across the Larsen C Ice Shelf in Antarctica.

It was a time of year that should have been perfect.

With a series of actions – including proposals to de-authorize recently created national monuments and open environmentally sensitive lands to fossil-fuel development

The Flint, Michigan, water crisis was perhaps the most high-profile example of the social inequalities tied to environmental issues.

Sea level rise and more severe storms are overwhelming U.S. coastal communities, causing billions of dollars in damage and essentially bankrupting the federal flood insurance program.

As Robert Muir-Wood sees it, there’s a basic flaw in how cities perceive disaster risk.