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Hillary Clinton has won the Iowa Democratic caucuses, according to the Iowa Democratic Party. On the Republican side, Ted Cruz upended Donald Trump, while Marco Rubio finished a strong third.

Republican presidential candidate Ted Cruz is barnstorming across Iowa, where his appeal to evangelical voters is making him a threat to GOP front-runner Donald Trump in the first caucus state.

As tension boils between the two regional powers, witnesses say it's not clear that Iran's embassy sustained damage, or was even hit.

The parasitic varroa mite has been wiping out honeybee colonies globally since the late '80s. Now scientists and beekeepers have teamed up to selectively breed bees with a unique, mite-fighting trait.

In the city of Qom, ayatollahs and hardliners fret that their government relinquished too much in its nuclear deal with the U.S. and other world powers. "God knows what we gave up," says an ayatollah.

Ted Cruz said he doesn't consider waterboarding torture, and Donald Trump said he would bring back "worse" methods. We break down whether that would be an option under the law.

Hamburg officials say single-use pods waste resources and aren't always recyclable. The city is believed to be the world's first to oust the capsules from schools, offices and other institutions.

The extended drought in California has farmers looking for ways to use less water. Among them, growing feed indoors using hydroponics. The new diet is making some Central Valley sheep very happy.

A federal judge ordered an attorney for Cohen to reveal the identity of a client that had been withheld as part of a battle over evidence following an FBI raid of Cohen's home and office.

At least 1,500 residents were ordered to evacuate after the Kilauea volcano erupted on Hawaii's Big Island. NPR's Audie Cornish speaks with Mileka Lincoln of Hawaii News Now.