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Inside a warehouse in Everett, Wash. the commercial fusion company Helion is building a next-generation device that it believes can revolutionize the electricity business.

Companies say they're closing in on nuclear fusion as an energy source. Will it work?

For decades, government scientists have toiled away trying to make nuclear fusion work. Will commercial companies sprint to the finish?

Dr. Rebecca Rogers practices primary care at the Cambridge Health Alliance in Somerville, Mass. During a recent appointment, she went over hydration tips with her patient Luciano Gomes, who works in construction.

When temps rise, so do medical risks. Should doctors and nurses talk more about heat?

The medical dangers of heat are real. But people often ignore public heat alerts, or don't know how vulnerable they are. A new alert system prompts clinicians to talk about heat with patients.

San Diego climate change activists rallied and created a large chalk drawing in the street in front of SEMPRA Energies headquarters in downtown San Diego, July 24, 2023.

Protesters 'disrupt' Sempra headquarters over climate crisis

The company released a statement saying it is investing billions in cleaner energy.

A mostly clear sky is seen behind a tree in San Diego, Calif. June 26, 2023.

Low pressure over San Diego County to bring below average high temperatures

Night and morning coastal low clouds were expected to spread farther into the valleys early Tuesday and Wednesday mornings.

In La Paz, a low-income neighborhood on the outskirts of Santa Marta, Colombia, water service from the local utility can be erratic or nonexistent. Pictured: Neighborhood kids stand next to a rain barrel positioned under a corrugated roof.

Waiting for water: It's everywhere in this Colombian city — except in the pipes

The country is rich in water resources. Yet many people in the city of Santa Marta struggle to get enough to meet daily needs. They improvise, strategize — and rely on a tangle of 1-inch pipes.

Supreme Court to consider abortion pills, guns, social media in its new term

In one form or another, all those questions are back on the table this term — mainly to take a second look at appeals from the Fifth Circuit Court of Appeals, which covers Texas and parts the South.

The March of Dimes released a new report showing a decrease in maternity access and an increase in preterm births.

As California maternity wards close, preterm birth rate rises

More than one in five California birthing hospitals closed in recent years, and the preterm birth rate is inching up.

Siblings Sofia Oliveira, 18, and Andre Oliveira, 15, pose for a picture at the beach in Costa da Caparica, south of Lisbon, Wednesday, Sept. 20, 2023.

Young climate activists challenging 32 governments will get their day in court

Six young activists are due Wednesday at the European Court of Human Rights, where they're accusing 32 governments of violating their human rights for failing to adequately address climate change.

Five years after one of the worst wildfires in American history, Paradise, California is slowly being rebuilt.

A California town wiped off the map by wildfire is still recovering 5 years on

Five years after of one of America's worst wildfires, slow and expensive recovery continues in Paradise, Calif., which could be a portent for what's ahead on fire-stricken Maui.

Gabriel Berrio Fabré, 18, looks out the window of his room in Los Pocitos, Havana. He is a visual artist, and like most of his friends, he wants to leave Cuba once he finishes his studies.

The Farewell Generation: A look into the Cuban youth exodus through love stories

More Cubans have fled to live in the United States in 2022 and 2023 than the waves of migration in the '80s and '90s. Three couples' stories show the complex realities of the current exodus.

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