Democrats and Republicans are haggling about the Clarity Act, a major bill pushed by the crypto industry, as it moves closer to a Senate vote.

Bill Frist, a surgeon who also served as Senate majority leader, has emerged as an outspoken advocate for environmental health. “A healthier planet means healthier people,” he said.

© Kirsten Luce for The New York Times

As the midterm elections approach, many leading Democrats are rethinking their approach to climate change.

As the midterm elections approach, many leading Democrats are rethinking their approach to climate change.

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An auction to drill in the Arctic National Wildlife Refuge ended with just 10 percent of the available land claimed for oil development.

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An auction to drill in the Arctic National Wildlife Refuge ended with just 10 percent of the available land claimed for oil development.

A PAC representing wind and solar energy interests spent $1.1 million to boost the Republican primary opponent of Chip Roy, an opponent of renewables. Now they are trying to save a Republican ally in Iowa.

A PAC representing wind and solar energy interests spent $1.1 million to boost the Republican primary opponent of Chip Roy, an opponent of renewables. Now they are trying to save a Republican ally in Iowa.

© Michael A. McCoy for The New York Times