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Why do some cheeses melt and caramelize better than others? Researchers used high-tech cameras and special software to figure it out.

A bias toward using male lab animals and tissue samples from males may be limiting the effectiveness of medical research, according to top officials at NIH. They'll roll out new guidelines this fall.

Kinsey Wilson was NPR's chief content officer when he was forced out last month by the network's new CEO, Jarl Mohn.

Sure as the season, some toys that turn up on the most-popular lists are also considered a safety hazard. So best to skip the LED crossbow, eye doctors say.

The 29 players on Booker High School's football team include two cousins who became the state's all-time leading passer and leading receiver this season.

The U.S. defense secretary said the Pentagon is aiming to invest about 10 percent more over the next five years to fix "systemic problems" of leadership, morale and aging equipment.

Frustrated by anesthesia machines that conked out when the power faltered, Dr. Paul Fenton came up with a solution: The Universal Anesthesia Machine.

Hipsters in Beirut have a problem. Their long, lustrous beards are getting them mistaken for Islamist extremists and drawing unwanted scrutiny from the security forces.

The majority of undocumented workers in the U.S. come from Latin America, but there are still huge numbers from elsewhere in the world. Renee Montagne talks to immigration attorney Muzaffar Chishti.

It's official: 2012 was the hottest year on record for the contiguous United States. In fact, it shattered the record set in 1998. The National Climatic Data Center says last year was also extraordinarily dry — and drought conditions are persisting into 2013.