Iran’s Supreme Leader Ayatollah Ali Khamenei said on Thursday his country had delivered a “slap to America’s face” with its ...

There have been many memorable moments in the 80-year history of the United Nations, both at its headquarters in New York and at its far-flung global operations. Here are photos of some of the U.N.’s ...

Power plants and industrial facilities that emit planet-warming carbon dioxide are hopeful that Congress will keep tax credits for capturing the gas and storing it deep underground. The process, ...