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A single genetic mutation might decide who ends up in bed with the sniffles and who heads to the hospital, because it shuts down immune system molecules called interferons.

One of the revolution's core promises was an egalitarian society. But as Cuba opens up, one of the unintended consequences may be more inequality.

Colorado's food and ag industries have been growing two to four times faster than the state's economy overall. The state's economists are ever more hopeful about cornering the market on ag innovation.

We asked people on Facebook to share their stories about coping with the cost of cancer care. See what they told us. Also, test your knowledge of cancer costs with a quiz.

The rate at which the ice is shrinking at the ocean's edge in the West Antarctic has increased by 70 percent over the past decade, an analysis of satellite measurements suggests.

The Duesseldorf prosecutor also said torn-up sick notes for the day of the crash supported that "preliminary assessment." He did not say what the illness was. Tuesday's crash killed 150 people.

A Nashville middle school is test-driving a big idea: To put a great teacher in charge of multiple classrooms.

The Democratic leader later told Nevada Public Radio he was endorsing Sen. Chuck Schumer of New York, the Senate's No. 3 Democrat, to succeed him as minority leader when his term ends in 22 months.

Charlie Todd choreographs bizarre, hilarious and unexpected public scenes. He explains how his group, Improv Everywhere, creates these moments of urban whimsy to bring people together.

Airstrikes and anti-aircraft fire rocked the capital, Sanaa, while Houthi rebels continued their push into southern Yemen. Meanwhile, Arab foreign ministers gathered in Egypt.