A ‘Dagger in the Heart’ of Climate Change Regulation

After rolling back a slew of regulations aimed at reversing climate change, and pulling funding for the scientists who monitor it, the Trump administration is now taking its boldest action yet. It’s eliminating the scientific finding at the heart of the government’s ability to fight climate change in the first place. Lisa Friedman, who covers climate policy, discusses the history of the finding, what it did and what happens once it’s gone.