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NPR's Sacha Pfeiffer talks with Lauren Whitehurst, a cognitive neuroscientist specializing in sleep, about who in our society doesn't get enough sleep and why that's a problem.

Leaders from tech giants like Google and PayPal say that the password as we know it is dead. So what's the future of authentication online? Apple is implementing fingerprint protection on iPhones, but questions linger about the security and feasibility of biometrics.

NPR's Mary Louise Kelly asks Washington Post reporter Michael Kranish about Michael Bloomberg's history of sexist and discriminatory behavior.

Climate change is causing ice caps and glaciers to disappear. One animal that the ice melt is affecting is the North Atlantic right whale.

Public health and law enforcement agencies around the U.S. are scrambling to blunt the impact of xylazine, a deadly new threat to Americans who use street drugs.

Ilia Malinin of the U.S. was heavily favored for men's figure skating gold, but a series of falls and downgraded jumps landed him in eighth place.

At the U.S. Curling Olympic Trials, a team of Gen Z curlers usurped the long-reigning champions in a big upset. Team Casper is bringing swagger, limber knees and some new sensibilities to a tradition-filled sport.

Once a racer for Norway, Pinheiro Braathen switched to Brazil, his mother's home country. In winning the Olympic giant slalom on Saturday, he earned South America's first medal at a Winter Games.

Kroger and Albertsons say the merger of the supermarkets could help with grocery prices. And, what is EEE? A fatal mosquito-borne disease that was detected in Massachusetts.

A shooting at the Kansas City Chiefs Super Bowl parade killed one woman and injured at least 21 others, including children. Russia is developing a nuclear capability that could target satelites.