Has Snowden crossed a red line?
The Butterfly Nebula
WATCH: 41 historic demises
The House's cold war over the IRS scandal just turned hot
The world's wealthy: By the numbers
Is it time to stop looking for Jimmy Hoffa?
3D-printed batteries the size of a grain of sand
John Oliver tackles the politics of immigration reform
Michael Hastings, remembered
Christie, the NFL, and the presidency
Earth's enormous scope
Washington has an Edward Snowden problem
Can one protester change history?
7 better color-changers than chameleons
LATEST: Was Sally Ride an 'absent heroine' of the gay rights movement?
An alternate route
The lesbian who allegedly faked her own hate crime
Chick-fil-A's anti-gay-marriage confession: Bad for business?
4 reasons the Boy Scouts may regret banning gays
Why Anderson Cooper came out as gay: 3 theories
The Oreo gay-pride cookie: Good for business?
Gays 'should die': A timeline of the Salvation Army's anti-gay flare-ups