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.

© Christopher Miller for The New York Times

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

The dream of clean hydrogen has tantalized energy experts for years, but producing it has been tough. Many start-ups think the answer could lie beneath our feet.