Until recently, China and India have been cast as obstacles, at the very least reluctant conscripts, in the battle against climate change. That reputation looks very much out-of-date now that both countries have greatly accelerated their investments in cost-effective renewable energy sources — and reduced their reliance on fossil fuels. It’s America — Donald Trump’s America — that now looks like the laggard.

According to research released last week at a United Nations climate meeting in Germany, China and India should easily exceed the targets they set for themselves in the 2015 Paris Agreement signed by more than 190 countries. China’s emissions of carbon dioxide appear to have peaked more than 10 years sooner than its government had said they would. And India is now expected to obtain 40 percent of its electricity from non-fossil fuel sources by 2022, eight years ahead of schedule.

Every one of the Paris signatories will have to reduce emissions to ward off the worst consequences of global warming — devastating droughts, melting glaciers and unstoppable sea level rise. But the tangible progress by the world’s number one producer of greenhouse gases (China) and its number three (India) are astonishing nonetheless, and worth celebrating.

There is also a lesson here for the United States. Piece by piece, agency by agency, the Trump administration seems determined to destroy or undermine every initiative on which President Obama based his pledge in Paris to substantially reduce America’s greenhouse gases: his plan to close old, coal-fired power plants, his proposals to reduce methane emissions from oil and gas wells, his mandates for more fuel-efficient vehicles. The excuse given in every case is that these rules would cost jobs and damage the economy — the same bogus argument once used by Vice President Dick Cheney to persuade President George W. Bush to renege on his campaign promise to combat global warming.