Steven White (right) helps serve dinner at the Salvation Army soup kitchen. Pam Fessler/NPR hide caption

itoggle caption Pam Fessler/NPR

Three Cups of Tea author Greg Mortenson, with son Khyber and daughter Amira, sit with students at the Gultori War refugee school in Pakistan. A 60 Minutes report questioned some of the stories Mortenson tells in the book and his charity's use of funds. Deidre Eitel/PR Newswire/AP hide caption

itoggle caption Deidre Eitel/PR Newswire/AP

Homeland Security Secretary Janet Napolitano said a warning will only be issued if there's specific information about a credible threat. Still, on Sunday night her department warned state and local law enforcement to be prepared for the possibility of an attack. Jeff Roberson/AP hide caption

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Philip Doud and his girlfriend, Cathy Espong, sit in their new one-bedroom apartment. They both lost their jobs and were found living on a San Diego sidewalk during a survey of the city's homeless population last fall. The Department of Veterans Affairs helped move the couple into permanent housing as part of a campaign to end homelessness. Pam Fessler /NPR hide caption

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The grand two-story lobby of the Times Square Building boasts marble floors and gold-trimmed ceilings. Common Ground redeveloped the once-dilapidated building into 652 units for low-income and formerly homeless tenants in 1991. David Gilkey/NPR hide caption

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David Ross, also known as Waterman Dave, hands out bottled water and energy drinks from his trunk in San Diego. The 75-year-old retiree has made it his mission to help the homeless — even if it's just with a hug or a kind word. Pam Fessler/NPR hide caption

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Speaker of the House John Boehner (R-OH) returns to his office from the House chamber after votes Feb. 18 on Capitol Hill. The House was debating the continuing resolution (HR 1) that contained Republican-proposed deep cuts in the budget. Alex Wong/Getty Images hide caption

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The Pepsi Refresh contest so far has awarded $20 million in grants for creative charitable ideas. Casey Rodgers/AP hide caption

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Antionette Levi solicits donations for the Salvation Army Dec. 21 in Chicago. As the season winds down, donations to Chicago-area kettles have been over 10 percent shy of those received last year, but the organization hopes to match last year's record total of $139 million. Scott Olson/Getty Images hide caption

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Lisa Tumbarello, a stylist trained by Stacy London from TLC's What Not to Wear, encourages customer Tom Spinelli to buy some ties at a Goodwill trunk show at Caramel, a boutique in Washington, D.C. Abby Verbosky/NPR hide caption

itoggle caption Abby Verbosky/NPR