Alex Ottoboni with his balcony solar panel at his condo in the San Francisco Bay Area

A delivery in Wilmington, N.C., this month. Heat is linked to hundreds of workplace deaths each year, but labor groups say the true toll is unknown because heat-related illnesses are not properly tracked or reported.

Krumme Lanke lake on a hot day in Berlin this summer.

An illustration published in 1877 depicted a scene in southern India. Millions died from a famine that coincided with an El Niño that year.

Rom Reddy said he was eager to shift the focus from his wall to his nascent campaign, which kicked off last month, much later than those of the other candidates.

A tour of the Geothermal House of the CERAWeek energy conference in Houston this week. Geothermal energy is emerging as one of the big green winners of the current era.

Pope Leo spoke at a conference on fighting climate change in Castel Gandolfo, Italy, on Wednesday.

A partially submerged car in Elmsford, N.Y., on Tuesday morning following heavy rains.

Twenty of the 472 stations in New York City’s sprawling subway network had to be temporarily closed on Monday night.

Recent construction work on a sea wall to protect Charleston’s downtown areas.