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Grid operators constantly match what power plants are producing with what people and their TVs, microwaves and air conditioners need. But when the electricity comes from unpredictable sources, like wind or solar power, balancing the grid is a challenge, a new study finds.

Tour guides in Greece's capital face are trying to convince visitors that Athens is more than the clouds of tear gas that ring Parliament these days. How do you do that when graffiti coats the statues and homeless people sleep outside the museums?

The drought that's hit huge swathes of the country is also draining the audiences for outdoor activities. Fishers, golfers, boaters and gardeners are staying indoors, and that's bad news for the businesses that depend on them.

The University of North Carolina is up for its sixth overall title, while Gonzaga is going for its first, in Monday night's championship game.

The hagfish may not be as primitive as once thought, thanks to a new fossil discovery. NPR's Scott Simon asks The Atlantic science writer Ed Yong about his recent piece on hagfish and their slime.

The 87-year-old conceptual artist unveils a large-scale installation of his work in Marfa, Texas, this week. He's spent his career creating site-specific art that often treats light as its subject.

The exhibit explores how Native Americans have used water. But it also points out how political water is.

Willa Cather's pioneer tale is often considered a young adult novel — but don't be fooled by the deceptively simple prose. Writer Bradford Morrow says older readers who return to the subtly sophisticated narrative will find new perspectives on their own journeys.

Pennsylvania residents who live near the site of a toxic train derailment in Ohio say they aren't getting the attention and recovery help that they should.

Three representatives from Texas voted against Kevin McCarthy to be speaker of the House. All represent different parts of the state but they stood united against McCarthy until Friday afternoon.