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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.

Lawyers for the government's special counsel and former President Donald Trump are set to clash in court in Washington over how the election interference case against him will proceed.

The Biden administration scrambles to respond as new data from the Centers for Disease Control and Prevention show overdose deaths surged to more than 100,000 fatalities.

When Erica Werner sings to her singing parrot, the term "songbirds" takes on a whole new meaning.

USCP Chief Tom Manger says problems that led to the Capitol riot have been addressed, and he is focusing on expanding field offices to be better prepared for rising threats to congressional members.

A nonprofit that supports defendants charged in the Jan. 6, 2021, insurrection is facing scrutiny over its political activity. "The IRS should investigate this case immediately," said one congressman.

In an upsurge of Mideast violence, Israeli soldiers kill at least six armed Palestinians in raids in the West Bank and Gaza Strip. It was the first Israeli incursion deep inside the Gaza Strip since it withdrew settlers and troops from there last year.

Our most-viewed Instagram videos include reports from a Rhode Island factory that makes special food for malnourished children and from a tournament for soccer-playing "grannies."

NPR's A Martinez talks to Dr. Rahul Gupta, the director of the Office of National Drug Control Policy, about the record opioid overdoses in the country.

The one-legged orphan in Liberia had figured out how to use a crutch as an improvised prosthetic leg. But he wanted the real deal.