Short Wave

When’s the last time you looked at your poop? Dr. Trisha Pasricha says you should look every time because it could save your life. A change in bowel habits is the number one indicator someone might have colon cancer, a disease on the rise in people under 50 in the United States. Host Regina Barber gets into what’s driving this trend with Trisha; plus, some shapes and colors you should keep an eye out for (did you know silver poop is a thing sometimes?). 

If you liked this episode, check out our first episode with Dr. Trisha: Are you pooping all wrong?

Interested in more science health news? Email us your question at shortwave@npr.org.

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Ahead of the peak of the Perseid meteor shower, we're re-airing our first episode with host Regina G. Barber. In it, Regina and planetary scientist Melissa Rice explore all things shooting stars. They talk about the different types, where they come from and what they actually are (hint: not stars).

Learn more about viewing the Perseids, which will peak Aug. 12: A Perfect Year for the Perseid Meteor Shower

Interested in more stellar science in the news? Email us your question at shortwave@npr.org.

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In Senegal, rice farmers are trying to kill three birds with one stone – er, fish. Rice and fish are already a natural combination; they’re even the main ingredients of thieboudienne, the delicious national dish. But could that combination also reduce a debilitating disease, boost food security AND help farmers make more money? A team of researchers are conducting an ambitious experiment to see whether growing rice and fish together can be a win-win-win for Senegal, and NPR’s Jonathan Lambert came along for the ride.

Interested in more science-based biological solutions? Email us your question at shortwave@npr.org.

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Hacking has been on the rise around the world. In 2025, the FBI’s Internet Crime Complaint Center received over 1 million complaints of cybercrime, a record high in the US. Hackers are always getting more creative, and now they have a new tool at their disposal: AI. 

Interested in more tech in the news? Email us your question at shortwave@npr.org.

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Have you ever wanted to be an astronaut without risking your life in space? If so, we have the perfect opportunity for you. NASA is calling for people with a science background to apply for a simulated mission to the Moon and Mars. Four adults will spend a year isolated in two enclosures meant to simulate both traveling through deep space and living on Mars. Learn whether you fit the profile and what NASA researchers hope to learn from the mission in this episode.

Interested in more space news? Email us your question at shortwave@npr.org and we may cover it in an upcoming segment.

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