Retired members of the United Auto Workers (UAW) listen to details of their retirement accounts while they attend a monthly benefits meeting in Detroit in 2008. Investment experts say people make the mistake of not adjusting the balance of stocks and bonds in their portfolios after making their initial investment. Spencer Platt/Getty Images hide caption

A life-sized reconstruction of the moment just before the dinosaur hatching and snake were preserved. The scales and patterning of the snake's skin is based on its modern relatives. The coloration of the hatchling is the artist's interpretation. Sculpture by Tyler Keillor/Photo by Ximena Erickson/Image modified by Bonnie Miljour hide caption

Diane Ravitch, once a staunch advocate of No Child Left Behind, speaks out against the law in her book, Death and Life of the Great American School System. Courtesy of Basic Books hide caption

Afghan army soldiers patrol Feb. 23 in Trikh Nawar on the northeastern outskirts of Marjah. Several thousand Afghan soldiers and police are participating alongside U.S. Marines in the operation that began in mid-February. Patrick Baz/AFP/Getty Images hide caption

Former Mass. Gov. Mitt Romney speaks to attendees of the 37th Annual Conservative Political Action Conference on Feb. 18, 2010, in Washington, D.C. Robert Giroux/Getty Images hide caption

Survival Until He's Fit: Newly imprisoned Malik (Tahar Rahim) looks to a veteran gangster for strategies that'll keep him alive. Jacques Audiard's film is a contender for the foreign-language film Oscar. Roger Arpajou/Sony Pictures Classics hide caption