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National
Friday
Penetrator bombs, commonly known as bunker busters, are stored on pallets at an ammunition plant in McAlester, Okla., in 2002. The U.S. sold 55 bunker busters to Israel in 2009, according to a recent Newsweek report. Sue Ogrocki/AP hide caption
The main ring of the Tevatron, seen in a time exposure. For a quarter century, the particle accelerator at a lab outside Chicago was the most powerful machine of its kind in the world. Reidar Hahn/Fermilab hide caption
Ryan Witmer (left) and Jhonmar Castillo wait with other couples to exchange vows in a civil union ceremony June 2 in Chicago's Millennium Park. New data from the U.S. census may reveal as much about changing attitudes as about changing numbers. Scott Olson/Getty Images hide caption
NPR's Facebook fans weigh in on how (and whether) they plan to retire. iStockphoto.com hide caption
Officials from Arizona-based First Solar and a New Mexico power company gather after the dedication of a new solar array in Albuquerque in April. Susan Montoya Bryan/AP hide caption
Thursday
Water plant operator Torrey Jones checks the clarity of a sample of treated water at the Beaver Falls Municipal Authority water treatment plant in Beaver Falls, Pa. Keith Srakocic/AP hide caption
This small juvenile skunk was caught by Des Plaines, Ill., homeowner Richard Kaulback. He says there have always been raccoons and opossums in the Chicago area, but this year, skunks have become prolific. Cheryl Corley/NPR hide caption
Los Angeles County Sheriff Lee Baca says he's already cleared as many as 4,000 beds in the county for the new group of prisoners, and he plans to use more home detention and electronic-monitoring systems. Damian Dovarganes/AP hide caption