SolarCity has received financing from Bank of America Merrill Lynch to install solar electricity systems on houses on military bases, like one here at Soaring Heights Communities at Davis Monthan Air Force Base outside Tucson, Ariz. Lend Lease hide caption

itoggle caption Lend Lease

Sophomore Emily Nugent is among Berea College's 1,600 students who receive free tuition. On average, Berea's students come from families with household incomes of about $25,000. Noah Adams/NPR hide caption

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Dr. Alex Dromerick co-directs the Brain Research Center at the National Rehabilitation Hospital. Here he observes Stephen Jones, a policeman who was involved in a motorcycle accident. Becky Lettenberger/NPR hide caption

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Republican presidential candidate Rep. Ron Paul of Texas is surrounded by supporters after speaking at a town hall meeting in Keene, N.H., on Monday. Cheryl Senter/AP hide caption

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The compact car-sized Mars Science Laboratory is due to land on the red planet on Aug. 6, 2012. It is equipped with a suite of instruments to study rocks and soils, and take other measurements. NASA/JPL-Caltech hide caption

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This weekend, the words and music of the English-language Mass will be different. iStockphoto.com hide caption

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Some big-name tech companies are asking Congress to step in and clarify Americans' online privacy rights. Nicholas Kamm/AFP/Getty Images hide caption

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When families get together for Thanksgiving, spirited discussions can sometimes break out at the table. Vanda Grigorovic/iStockphoto.com hide caption

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Chris Kimball uses "secret" ingredients to make his Thanksgiving dishes special, including herb roasted turkey, green beans, corn-flake stuffing and multigrain rolls. And for dessert, he made a spiced pumpkin cheesecake. Becky Lettenberger/NPR hide caption

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Newt Gingrich is shown teaching a class at West Georgia College (now known as the University of West Georgia) in the 1970s. As a politician, he has long stressed his background as a scholar. Courtesy of Gingrich Productions hide caption

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Former U.S. Sen. Rick Santorum greets voters this summer in Iowa. The Republican presidential hopeful has spent most of his professional life in politics. Chip Somodevilla/Getty Images hide caption

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A fire burns in a scale model of a living room in the ATF's Fire Research Lab in Beltsville, Maryland. Until the development of the FRL, there were no fire measurement facilities in the U.S., or anywhere, dedicated to the specific needs of the fire investigation community. Courtesy of the ATF hide caption

itoggle caption Courtesy of the ATF

Interim Penn State football coach Tom Bradley, shown here at a Nov. 12 game against the Nebraska Cornhuskers, is now focused on Saturday's game against Ohio State. Justin K. Aller/Getty Images hide caption

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