New Jersey Gov. Chris Christie participated in a roundtable discussion at the Farnum Center in Manchester, N.H. earlier this month. Jim Cole/AP hide caption

Health workers collect the body of a cholera victim in Petionville, Haiti, February 2011. The cholera outbreak in Haiti began in October 2010. Nearly 9,000 people have died. David Gilkey/NPR hide caption

In the face-to-face interview process, research shows that managers tend to hire applicants who are similar to them on paper. Bjorn Rune Lie/Getty Images/Ikon Images hide caption

Fish for sale in the fish market in Fraserburgh, Scotland. Ari Shapiro/NPR hide caption

Protesters gathered on the steps of the New York Public Library on Wednesday to show support for silenced Chinese writers. Frank Franklin II/AP hide caption

A security fence surrounds the main part of the U.S. Army's Dugway Proving Ground, a testing laboratory in the Utah desert. The Army says it mistakenly shipped live anthrax from Dugway to several labs in the U.S. and Korea. George Frey/Getty Images hide caption

Los Angeles started offering a $3.75 rebate on every square foot of grass replaced with a drought-friendly landscape. The drought is a boost in business for local conservation entrepreneurs. Frederic J. Brown/AFP/Getty hide caption

A team of scientists say they've discovered evidence of a 435,000 year old murder, based on evidence from the injuries on this skull. Javier Trueba/Madrid Scientific Films hide caption

Striking French teachers hold a German flag as they take part in a nationwide protest against new measures aimed at revamping the country's school system, in Marseille, France, on May 19. France's 840,000 teachers are largely opposed to the reform, their unions say, fearing it will increase competition between schools and exacerbate inequalities. Jean-Paul Pelissier/Reuters/Landov hide caption

Thomas Mapfumo performs on stage during Live 8, Africa Calling, in 2005. Matt Cardy/Getty Images hide caption