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Since touching down in Jezero Crater, NASA's Perseverance rover has already cached 6 samples that could one day be brought back to Earth. Astrobiologists hope they hold signs of past microbial life.

NPR's Daniel Estrin talks to Kim Wehle, constitutional law scholar at the University of Baltimore, and David Frum of The Atlantic, about whether the insurrection clause disqualifies Donald Trump.

Zucker, CNN's top executive, says he failed to disclose the relationship when it began, as the company requires. Instead, it emerged during an inquiry into former CNN host Chris Cuomo.

An underground world in the Ukraine capital is made up of Soviet-era bomb shelters, bunkers and basements. A potential Russian attack threatens to put the bygone shelter system to the test.

Miami and New York City are racing to become the country's next "crypto capital" at a time when many see virtual currencies as the future of finance.

The U.S. hit a new record high for infections in a single day on Monday, with 1,082,549 new cases recorded. Hospitalizations are also on the rise, but not at the same rate.

Health and Human Services Secretary Xavier Becerra says health providers who have exploited a complicated system to charge exorbitant rates will have to bear their share of the cost — or close.

Hollywood sports films often ignore facts in favor of plot, and the new hit Glory Road is no exception. Chicago Sun-Times columnist Ron Rapoport and John Ydstie talk about basketball movies.

NPR's Ari Shapiro speaks with Graeme Wood, staff writer at The Atlantic, about his profile of Mohammed bin Salman, the crown prince of Saudi Arabia.

Some ecosystems have already been irreversibly altered, scientists say. And climate change is wreaking havoc on human health.