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It's a mystery how butterflies manage to make their brilliant wing colors, but Yale physicists got a glimpse when they took the question to the lab, breeding dull brown butterflies into purple ones.

The House Jan. 6 committee preps for a primetime hearing. Poll: A majority of Americans blame Trump for Jan. 6 insurrection. The pipeline that brings natural gas from Russia to Germany is to reopen.

While Health and Human Services Secretary Robert F. Kennedy, Jr. made his first appearance before lawmakers since the ousting of the former head of the CDC on Thursday, Kentucky Governor Andy Beshear and Health Secretary Dr. Steven Stack raised concerns about Kennedy's messaging.

NPR's Ari Shapiro talks with Sue Mi Terry of the Center for Strategic and International Studies, about reports that North Korea's envoy to the U.S. has been executed in a sweeping purge.

Responding to a scathing critique from the commander of the coronavirus-stricken aircraft carrier, Navy officials were on the defensive at a Pentagon news conference.

India's Supreme Court is hearing arguments in the historic case this week, years after it decriminalized gay sex. India could become the second place in Asia to allow marriage equality, after Taiwan.

The Department of Justice hired a former Jan. 6 defendant who was caught on tape urging rioters to "kill" police. The department calls him a "valued member" of the administration.

Bill Wehrum, who last week scored a victory for coal industry supporters by rolling back Obama-era power plant emissions rules, is leaving his post at the end of the month.

A new study shows a rise in depression and stress among young people parallels the growth in smartphone and social media use.

After Nancy Glynn got pregnant, she learned her employer didn't offer paid family leave. Then, like many Americans, she discovered it was hard to get by without it.