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Weeks of frigid temperatures and snowstorms will give way to warmer weather this week. But first, there's one more round of snow coming through. It's expected to be accompanied by thunder and lightning.

In a former bomb shelter beneath London, Zero Carbon Food grows leafy greens and microgreens. Believe it or not, this dark, dank underground farm is an energy-efficient way to grow fresh produce.

Better fuel efficiency for such vehicles is a "win, win, win," the president said. It will help reduce dependency on foreign oil, save drivers' money and cut greenhouse gas emissions. Manufacturers, though, say the standards could make the vehicles more expensive and less safe.

Some consider former NSA contractor Edward Snowden a hero for releasing classified material to the media; others argue that he has irreparably harmed national security. Famed whistleblower Daniel Ellsberg and a former CIA director face off in the latest Intelligence Squared debate.

A prominent whistleblower who raised safety concerns at the nation's most polluted nuclear weapons production site has been fired from her job at the…

This weekend, the conservative justice weighed in from Chicago on a national pizza controversy. For months, Stewart and Chicago mayor Rahm Emmanuel have been dueling over whether Chicago's deep-dish style constitutes pizza.