By Jennie Erin Smith In 1978, Dr. Francisco Lopera did what recent medical school graduates in Colombia and much of Latin America have...

By Kenneth Chang Two private astronauts moved outside their spacecraft early Thursday morning, conducting the first-ever commercial spacewalk. The spacewalk was the centerpiece of Polaris Dawn, a collaboration between Elon Musk’s SpaceX and Jared Isaacman, a billionaire entrepreneur who is leading the mission. “Back at home, we all have a lot of work to do, but from here, Earth sure looks like a perfect world,” he said while standing in the hatch of the SpaceX Crew Dragon cap

By Stephanie Nolen The cholera outbreaks spreading across the globe are becoming more deadly. Deaths from the diarrheal disease soared...

By Alice Callahan If hit podcasts, bestselling books and influencer culture are any indication, millions of people are obsessed with...

By Kenneth Chang The Starliner has landed. Boeing’s troubled spacecraft has finally come home, but the two NASA astronauts who traveled in it to the International Space Station in June remain in orbit. Because of problems with Starliner’s propulsion system during its approach to the space station in June, NASA officials decided not to put astronauts Suni Williams and Butch Wilmore on Starliner for the return trip. They will spend an additional five months on the space station

By Dani Blum The World Health Organization declared mpox a global health emergency last month. The virus, formerly known as monkeypox, is...

By Emily Laber-Warren Jodi Wellman was devastated when her mother died of a heart attack at age 58. Cleaning out her apartment made her...

By Becky Ferreira Scientists have discovered new evidence that the rock that slammed into Earth 66 million years ago, abruptly ending the age of dinosaurs, was a bit of an oddball. The nature of this apocalyptic object, known as the Chicxulub impactor, has inspired intense debates, including a long-running dispute over whether it was a comet or an asteroid. But evidence has been mounting in recent years that the roughly 6-mile-wide impactor belonged to a family of asteroids t

By Emily Baumgaertner Jason Moyer was days away from a family road trip to visit his parents when his 10-year-old son woke up with a...

By Alexandra E. Petri They may be an ocean apart, but dinosaur footprints found in South America and Africa are so similar that their discovery suggests dinosaurs may have roamed a narrow corridor that connected the two continents before they split. Researchers found more than 260 footprints more than 3,700 miles apart in Brazil and Cameroon that were preserved in mud and silt where ancient rivers and lakes once stood, according to a study published last Monday by the New Mex