The New York Times has an article on the Trump administration's decision to pull the United States out of the Paris Agreement on climate change. The first sentence wrongly describes the United States as "the world's largest economy." Actually China passed the United States as the world's largest economy early in the decade. According to the I.M.F. its economy is now more than 25 percent larger than the U.S. economy. It is projected to be more than 50 percent larger by 2024.
This matters because China actually has moved aggressively to adopt clean energy. It is now by far the world leader in the use of solar and wind power and electric car sales. The fact that the Trump administration is determined not to cooperate in efforts to reduce greenhouse gas emissions is unfortunate, but the fact that the world's actual largest economy is taking big steps to curb emissions is hugely important.