President Donald Trump on his first day in office again withdrew the U.S. from a landmark global pact to fight climate change. So what is the Paris Agreement? And what happens to it now?

Trump signed an executive order that begins the process of withdrawing from the Paris Climate Agreement, which he also did during his first term.

One of President Trump’s first executive orders withdraws the U.S. from the Paris climate agreement. These graphics show why the pact is crucial to curbing the worst effects of global warming