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If projects to colonize Mars succeed, how will these new communities be run? Barbara J. King says they represent an opportunity to fashion a more egalitarian way of life than we have on Earth.

Mothers in opera tend to be, well, operatic — stressed, dramatic, expressive. Try identifying the manic moms in this Mother's Day puzzler.

Iggy Azalea, Lily Allen and Sky Ferreira may not have much in common as musicians, but all three have recently drawn fire for appropriating masculine African-American imagery.

The Oklahoma City Thunder star fought back tears while thanking each of his teammates, the coaches, staff and his family.

A popular summer spot is closed indefinitely because of mysterious holes — one of which temporarily buried a boy — that open and close in less than a day. Scientists have no idea why.

Nearly a century since a national scandal, the U.S. government's involvement with Teapot Dome is finally ending. Wyoming Public Radio's Stephanie Joyce says that the whole site is being auctioned off.

The Obama administration is issuing new guidelines to keep states from barring the children of undocumented immigrants from attending public school. The Supreme Court has guaranteed these children free access to a public education, but some states appear to be denying it anyway.

An energy efficiency bill has stalled in the Senate, primarily due to disagreement over the Keystone XL oil pipeline. The dispute leaves an otherwise popular bill in limbo.

Despite Russian President Vladimir Putin's recent comments, separatists in some cities in eastern Ukraine say they plan to go ahead with their unofficial independence referendum on Sunday.

Greg Bryant, a professor at UCLA, explains his studies on laughter. Using acoustic analysis, he found that real laughter was more emotional, closer to animals, and fake laughter was closer to speech.