New York City plans to add streetcars to connect its isolated areas, but critics are wary. Streetcars in other cities have few riders, and Washington, D.C.'s streetcar opening was delayed for years.
California's Department of Motor Vehicles proposed that self-driving cars should have a licensed driver inside. It may disrupt the dream of driverless cars, but it's also seen as a step for safety.
Scientists were studying the properties of the light coming from a quasar — one of the brightest objects in the universe — when the light just seemed to wink out. Now they think they know why.
Iranians were promised that a nuclear deal would lead to an economic boost as sanctions vanished. But as the country votes for a new parliament on Friday, there's been no economic upturn.
New federal numbers show that amid falling gas prices, Americans drove a record 3.15 trillion vehicle miles last year. This also means more pollution and traffic gridlock.
David Greene speaks with National Security Editor Phil Ewing about the proposal President Obama delivered to Congress for closing the detention center at Guantanamo Bay, Cuba.
For more than 300 years, children have performed kabuki, Japan's classical theater, in the village of Damine. But as residents age or leave for cities, Damine is running out of young performers.
Left-leaning economists and Democratic analysts are sparring over Sanders' proposal of health care for all, paid for by the government. Some who like his aspiration say the numbers don't add up.
Scientists say the buzz picked up by hydrophones in the Pacific may be caused by "fish farts" — the emptying of air bladders that let clouds of fish rise and fall during daily hunts for food.
Gulf states are starting to spend the first of billions from BP's settlements and fines for the worst environmental disaster in U.S. history — but not all the money is being used for restoration.