Biden has called climate change “the existential threat of our times.”
Among his first acts as president was rejoining the Paris climate agreement. But reversing the rest of Trump’s environmental impact will be a far more complex task.
The Trump administration rolled back more than 170 rules and regulations — loosening caps on carbon pollution from power plants, weakening oversight of toxic dumping in the nation’s waterways and eroding protections for endangered wildlife.
The aim, he said, was to save jobs and make the United States energy-independent. Oil and gas production increased under his watch, and some energy sectors gained jobs, notably wind and solar. The coal industry continued its decline.
As extreme weather events became more common and more devastating, Trump dismissed the impacts of climate change.
[ Tracking Biden’s environmental actions ]
Watch to get an in-depth look at how Trump rolled back environmental protections, with analysis from environmental reporter Brady Dennis and national affairs correspondent Juliet Eilperin.