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A big difference between humans and other apes is the ability to stride easily on two feet. A new analysis of fossil bones shows that adaptations for bipedal walking go back 7 million years.

Olympic boxing seems to know that its scoring is weird, its fan base eroding, and its status as an Olympic sport is coming into question. They can address some of those problems by using stronger math to decide who wins close bouts.

Projections of deaths from COVID-19 vary wildly. How are we to make sense of the differences? One researcher has developed one model that compares and merges them all.

Early Wednesday morning brought a lunar event that hadn't been seen since 1866. Scientists say data gathered during the event could help them figure out where to land a rover on the moon.

Girls in the U.S. are getting their first menstrual period about 6 months earlier on average than they did in the 1950s and '60s. And the number of girls starting their period before age nine has doubled. Researchers say parents can help prepare their kids for early puberty.

The brief declaration of martial law in South Korea last month has drawn comparisons to the Jan. 6, 2021, attack on the U.S. Capitol. The attempted power grabs could hold lessons for other democracies.

Frazier in his final words criticized Michigan Gov. Gretchen Whitmer for not returning him to serve out a previous life sentence in her state, which doesn't have the death penalty.

Former President Trump's false claims about voter fraud sparked a movement to restrict voting access. NPR's Ari Shapiro talks with Michael Waldman of the Brennan Center for Justice about the new laws.

Entergy failed to rebuild a stronger system after hurricanes repeatedly damaged its electric grid. Then Hurricane Ida knocked out power for more than a week in the middle of a heat wave.

A mystery has been brewing in a small ranching town on Hawaii's Big Island. Word has it that Salesforce CEO Marc Benioff bought the land, stirring worries about what he plans to do with it.