“All systems are flashing red,” Clea Schumer, a researcher at the World Resources Institute, one of the organizations involved in the report, said last week on a call with reporters. “There’s no doubt ...

Earth's systems are nearing tipping points that could plunge the planet into a "hothouse" regime — but there's still time to prevent that from happening, scientists say. When you purchase through ...

WASHINGTON — Climate change poses a mounting threat to U.S. national security, with rising temperatures, droughts and extreme weather likely to trigger instability and conflict in developing countries ...