It’s high noon for the humble leap second.

Russian officials say they still have no firm information where a failed Mars moon probe plummeted to Earth, the day after it went down.

The rotation of the Earth has defined time for as long as time has been kept, but keeping up with all of Earth's little quirks by adding and subtracting an occasional leap second is getting tiring. Timekeepers could vote Thursday to rely solely on atomic clocks. 

GENEVA - It's high noon for the humble leap second.

January 16, 2012 (ENS) - Earth Day Network kicked off the new year by announcing its partnership with five U.S. cities to work toward reducing their carbon emissions.

MOSCOW - Russian officials say they still have no firm information where a failed Mars moon probe plummeted to Earth, the day after it went down.

Russian officials say they still have no firm information where a failed Mars moon probe plummeted to Earth, the day after it went down.

Texas Rare Earth Resources Corp. , a mineral exploration and development company, today provided an update on its heavy rare earth project at Round Top

PARKERSBURG - Mother Earth Foods and the North End Tavern and Brewery are collaborating on a new ale for Earth Day. Plans call for the brew with a hazelnut brown style to be called Health Nut Brown ale, said Chris Hopkins, brewer at the N.E.T.

Students create a simple video showing the breadth of what it means to be human.