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The soulful folk song, born in the low country of South Carolina, has migrated from representing strength and power in togetherness to reflecting weakness and wimpiness. Somehow, it's morphed into a cynical code word.

Stanford professor Manu Prakash explains how bubbles can be used as bits to make a computer. By directing the bubbles through etched pathways, they act like electrons traveling through circuits. In this system, however, the computer is powered by gravity and the bubble bits can carry things inside of them as they compute.

The Kentucky senator said he saved more than 16 percent of his office's allotted operating budget.

The Eisenhower family has asked for a delay in the planning of a memorial for President Dwight Eisenhower. The family says they have differences with architect Frank Gehry's concept for the memorial.

Despite Texas Rep. Ron Paul's strong showing at the Iowa caucuses and New Hampshire primary, few Republicans think he could win the party's nomination. But some are concerned he could take his support and launch a third-party bid for the White House.

Federal trial court vacancies are going up under President Obama, even as caseloads are rising. A Brookings Institution report shows that this is the first time in memory that a president three years into his first term has seen judicial vacancies rise.

"If we want to make media better then we've got to start consuming better media," says open-source-Internet activist Clay Johnson. His new book, The Information Diet, makes the case for more "conscious consumption" of news and information.

Germany's official entry at the 84th Oscars is Pina, a documentary showcasing the groundbreaking work of the late choreographer Pina Bausch. Director Wim Wenders discusses Bausch, representing dance on screen, and working in 3-D.

Democrats plan to turn in petitions by the truckload to try to force a recall election of Gov. Scott Walker, an effort that follows the governor's move to strip public workers of union bargaining rights. But the petitions will then be scrutinized for months, particularly by lawyers for Walker's campaign.

The lack of snow in most of the northeast has extended the hiking season for those willing to brave the cold. Brian Mann takes a winter hike into Roaring Brook Falls in New York's Adirondack Mountains.