US formally exits Paris pact aiming to curb climate change

BERLIN (AP) — The United States formally left the Paris Agreement, a global pact forged five years ago to avert the threat of catastrophic climate change. The move was long threatened by U.S. President Donald Trump and triggered by his administration a year ago. It further isolates the United States in the world but has no immediate impact on international efforts to curb global warming. Some 189 countries remain committed to the 2015 accord, which aims to keep the increase in average temp