EPA Administrator Lee Zeldin officially revoked the endangerment finding, in a huge blow to U.S. efforts to fight climate change.

The Trump administration has revoked a scientific finding that climate change is a danger to public health, an idea that President Donald Trump called “a scam.”

It’s a rejection of fact that had been accepted for decades by presidents of both parties, including Richard Nixon, whose top adviser warned of the dangers of climate change and the first President Ge...