America will be better off without nonstick pans: healthier, safer and perhaps even more skilled at cooking.

The burning of coal is the largest contributor to climate change worldwide. But the Trump administration sees United States coal as crucial.

The burning of coal is the largest contributor to climate change worldwide. But the Trump administration sees United States coal as crucial.

Readers criticize President Trump’s harsh speech. Also: Jimmy Kimmel’s return, and the F.C.C.’s threats; women in Congress; politics at the E.P.A.