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If the history of thermodynamics can teach us anything, it is that modest entropy reversals have not taken us back in time at all. But it is more fun to think otherwise, says guest Jimena Canales.

One in four calls to the Washington, D.C., 911 line isn't an emergency. The city now has triage nurses working with dispatchers to get callers with less urgent needs a same-day clinic visit instead.

Both shows are set in adystopian near-future where things have gone terribly wrong — and both expand their established environments considerably in their sophomore seasons.

Consolata Agunga goes door-to-door in her village in Kenya. She is paid next to nothing. It's a tough job. So what's the appeal?

These days, green tea has its health halo pretty firmly affixed. But in Victorian England, adulteration was rampant, and the drink was seen as a "stomach-churning, nerve-jangling threat to health."

David Greene revisits his 2011 trip to Libya and the period following the fall of Moammar Ghaddafi, to try to understand how the revolution unexpectedly gave way to the Islamic State's incursion.

A nuclear agreement with Iran hinges on the work of nuclear inspectors. Here's a close-up look at how they train to do their job.

Better read the fine print of your health insurance policy. An unlucky woman in Minnesota learned her policy was woefully skimpy only after she fell while walking her dogs, and faced a $19,000 bill.

The American chestnut is poised to return — as a bionic, blight-resistant tree. Scientists hope to plant about 10,000 transgenic plantlets to pollinate trees in the "wild."

You don't have to leave all the cooking for Thanksgiving Thursday. We offer tips for getting most of the meal ready in advance so you can sleep in a little later on the big day.