Fusion

A giant laser facility in Livermore, Calif., says it has created net energy from nuclear fusion. It's an important breakthrough, but fusion power remains a distant dream.

President Obama is asking for a review of a government program that has been arming thousands of police departments nationwide -- including a number of…

The new English-language cable channel, which launches Monday, aims to reach younger viewers with a Daily Show-inspired mix of news, pop culture and satire.