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What's the secret to long-lasting milk? A complex system of refrigeration called the cold chain. But in some parts of developing countries, the chain doesn't exist, leaving a lot of milk to spoil.

Scientists are growing mock organs made of human cells to better study diseases and help test drugs. Researchers at Johns Hopkins are working on a gut-on-a-chip.

Keeping blood sugar under control reduces the risk of early death for people with Type 1 diabetes, a study finds. But keeping that tight control can be hard, even for people with good health care.

In 2015, mobile games revenues are expected to hit more than $30 billion worldwide. Apple wants these casual gamers to play their mobile games on its streaming TV console.

In Atlanta's East Lake community, an organization called Purpose Built Communities is trying to make gentrification work for the residents who endured the tough times.

When a 23-year-old who has tried to kill himself visits family, he must mentally prepare to resist hurting himself with their guns, he says. Gun access can make suicidal impulses harder to fend off.

As Congress debates the Iran nuclear deal, the presidential candidates — from Hillary Clinton to Donald Trump — weigh in on the agreement and expose the political fault lines on national security.

In symbolic hope for a sweet new year, many Jews will mark the start of Rosh Hashanah with honey cake. The cake is sentimental, but not always beloved. Here, a delectable update to the ancient recipe.

The biggest honors in television will be handed out Sunday night. This year's ceremony comes at a turning point for the awards and the TV industry in general.

Migrants from as far away as Afghanistan have been placed behind barbed wire in detention camps in Hungary. NPR's Lauren Frayer visits a camp where the numbers — and the frustrations — keep growing.