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The U.S. hasn't tested a nuclear weapon in decades, and since the 1990s has used simulations and experiments to verify they're working properly. NPR was granted a rare look at how they do it.

The Trump administration's order to stop all foreign aid has immediately affected people with HIV/AIDS. Clinics around the world rely on U.S. funds to provide treatments to those battling the disease.

With the ceasefire between Israel and Hamas in Gaza, Houthi rebels in Yemen have stopped missile attacks on ships in the Red Sea and have also released a shipping crew held hostage for over a year.

Extreme conditions helped fuel the fast-moving fires that destroyed thousands of homes. Scientists are working to figure out how climate change played a role in the disaster.

Everything's felt like, and been called, a "crisis" lately. This hour on The Colin McEnroe Show, we talk about the overuse of the term "crisis," and crisis fatigue.

Millions continued to throng the site even as police urged them to avoid the area. Deadly stampedes are relatively common around Indian religious festivals, where large crowds gather in small areas.

With the longer days and stronger sun, we can start growing vegetables indoors in a sunny window. The keys are full sun, warmth and the right greens.

"Burnout" is more than just a buzzword. So, how do we combat it? This hour, we hear from Emily Ballesteros, author of the new book "The Cure for Burnout."

Acting EPA Administrator James Payne sent an email to members of the agency's Science Advisory Board and the Clean Air Scientific Advisory Committee informing them that both are being "reset."

Two NASA astronauts flew to the International Space Station in June on Boeing's Starliner capsule. The test flight was planned for eight days but technical troubles forced the capsule to return empty.