Science

If generosity makes us happy, and lots of research suggests that it does, why do many of us find it difficult to be generous?

Michigan doctors used 3-D printing to custom-make a splint to prop open Garrett Peterson's defective windpipe last January. He's home with his parents this Christmas, as "normal life" begins.

Egg cartons these days are often plastered with an array of terms that can confuse and even mislead consumers. Here's a glossary of carton jargon for the wannabe informed egg buyer.

Men who haven't had sex with other men in a year will be allowed to donate blood under a proposed change in FDA policy.

Should dietary guidelines consider the environmental effects of our food choices? The government-appointed Dietary Guidelines Advisory Committee thinks they should. Congress, however, says no.

A Buenos Aires judge ruled in favor of advocates, who are calling for more freedom for Sandra, a 28-year-old orangutan who was born in a zoo.

The holiday season is a big time of year for charitable giving. Host Audie Cornish speaks with NPR's Shankar Vedantam about a study that says portion of charitable giving is driven by social pressure.

At 31, a woman had the bacteria in her gut catalogued as part of scientific project that aims to characterize the creatures that live inside us and affect our health. Here's what she found out.

Environmental groups had sought to have coal ash, a byproduct of coal-fired power plants, regulated as hazardous waste.

Rising temperatures have hastened harvest dates in Sonoma County — and they're changing grape-growing patterns around the world. Vineyards are responding with everything from sunscreen to sensors.

NPR's Rachel Martin takes a moment to talk about a new fish discovered in one of the deepest places on Earth.

Weekend Edition staff have been picking their favorite interviews from 2014. Editor Natalie Winston talks with NPR's Rachel Martin about an interview with an evangelical Christian climate scientist.