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The four-member crew — three astronauts and a cosmonaut — launched in March and conducted more than 200 experiments. They also performed spacewalks and did maintenance on the orbiting outpost.

Ahead of Tuesday's vice presidential debate, here is where the two running mates differ on some issues from their party's presidential nominees.

Climbers Tommy Caldwell and Kevin Jorgeson finished their historic first free climb on El Capitan's Dawn Wall in Yosemite National Park. Melissa Block talks with the duo about their 19-day effort.

A committee of experts examined about a dozen different synthetic biology technologies that could be potentially misused. For each, they considered how likely it was to be usable as a weapon.

Michael Honeycutt, the top toxicologist for Texas, is the latest chair of the EPA's science advisory board. But some scientists warn his views align more with industry than with scientific consensus.

In a family-owned cafe outside of Lisbon, select bakers make a custard treat called the Pastel de Belém, which draws fans from all over the world. But the recipe has been closely guarded since 1837.

Only two members of the U.S. synchronized swimming team are going to London for this summer's Olympics. The pairing is fairly recent — they even used to be rivals — but some of their competitors have been swimming together since childhood.

George Balanchine's modernist masterpiece was the first full-length, nonnarrative ballet. Russian, American and French ballet dancers have gathered to perform it together in New York City.

From so-called "bathroom bills" to a teen wrestling champion, 2017 saw transgender rights surge to the forefront of public consciousness.

As head of U.S. counterintelligence, William Evanina's job is to stop America's enemies from spying here. "We spend a lot of time fixing what's happened," he says. He'd like to see greater prevention.