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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.

California regulators say autonomous cars should have a licensed driver, but a top Google engineer says that makes as much sense as putting a steering wheel or brake pedal in the back of a cab.

You nominated 300 cool stories of scientific surprise for Skunk Bear's Golden Mole Award. Our shortlist has it all: circuits painted with light, imperceptible genitalia, and a terrifying frog.

Mobile phones that double as stun guns. Smart bikes connected to an app that can deter thieves and track your workout. We got an eyeful of futuristic gadgets at a mobile tech conference in Barcelona.

Researchers say Colombia offers a chance to learn more about Zika's possible link to microcephaly. If the country sees a sudden rise in cases as Brazil did, that's stronger evidence of a connection.

Astronomers have known about the powerful pulses but had never been able to catch one in the act to help figure out what's producing them. Last year, they got one.

The spy agency can glean all sorts of information. But it's a double-edged sword because CIA employees may have left a detailed digital trail before they joined the agency.

Perry had been accused of abusing his power as governor. A grand jury indicted him in August 2014, as Perry was ramping up his presidential campaign.

Donald Trump is now the most favored son of the Republican Party in a year when history favors the party's chances of winning the White House.

Facebook rolled out five new emojis globally. Now, users can not only "like" a post but also choose "haha," "angry" and other options. Users are taking to social media to voice their reactions.