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Unmanned Aerial Vehicles (UAVs) are replacing boots on the ground in some wars. Commercially, UAVs are being used for things like crop-dusting and flood mapping. Experts discuss advances in drone technology and how to address legal and privacy concerns that stem from their use.

The Labor Department said the economy added 243,000 jobs in January, well beyond many economists' expectations. The unemployment rate fell to 8.3 percent.

Amyloid plaques and tangles of protein in the brain are two of the key signs of the form of dementia known as Alzheimer's disease. In new work reported in the journal PLOS One, researchers tracked the spread of tangles of tau protein from neuron to neuron in the brains of mice. Study co-author Karen Duff of the Columbia University Medical Center discusses the findings.

The top 10 teams in men's college basketball are mostly the usual suspects, Kentucky, North Carolina and the like. One team no one expected has snuck into the polls this week: the Murray State Racers. Guest host David Greene is joined by Ricky Martin, the sports editor of the Murray Ledger-Times.

Sales of reclining chairs and sofas are as hot as New York Giants receiver Victor Cruz's touchdown dance. Or, for you New England Patriots fans, as popular as star tight end Rob Gronkowski's sprained ankle.

Despite Mitt Romney's time as governor, his previous presidential run and quite a few years in the spotlight, many people still feel they don't know much about him. The clean-cut, buttoned-up candidate is notoriously quiet about his private life, and his former colleagues and friends haven't revealed much, either.

Brown University senior Malcolm Burnley was working on a class assignment in the library archives last fall when he made a startling discovery: a forgotten speech that Malcolm X, the Muslim minister and human rights activist, had made to the university in 1961.

Boxing champion Sugar Ray Leonard remembers the trainer who stood in his corner through some of his greatest fights ever. Along with Leonard, Angelo Dundee trained a long list of boxing champions including George Foreman and the great boxing legend Muhammad Ali. The renowned trainer and cornerman died this week at age 90 at his home in Tampa, Fla.

The Chinese automaker JAC unveiled their latest design this week, and it bears a rather notable resemblance to the Ford F-150. Though the engine is much smaller, the JAC 4R3 will go on sale across China and in Africa and Latin America, after its debut at the Beijing motor show in April.

Nevada holds its Republican caucuses today it is the first Western state to weigh in on the nominating contest. NPR's Ari Shapiro reports that Mitt Romney is widely favored to win and has the latest from Nevada.