Iowans attend a marriage rally sponsored by The Family Leader on Tuesday at the Statehouse in Des Moines. The head of the organization says President Obama's endorsement of gay marriage could cost him the election. Charlie Neibergall/AP hide caption

President Barack Obama told ABC this week that he supports gay marriage. Carolyn Kaster/AP hide caption

In Afghanistan, American troops are pushing Afghans to take charge. David Gilkey/NPR hide caption

Tornado survivor Jonathan Ford saves what he can from his home April 29, 2011, after it was destroyed by a powerful tornado in Pleasant Grove, Ala. John Bazemore/AP hide caption

Lizz Winstead is a co-creator and former head writer of The Daily Show and one of the founders of Air America Radio. Mindy Tucker/Courtesy Riverhead hide caption

At 101, Roman Totenberg was teaching students up to the very end of his life. Suzanne Kreiter/The Boston Globe via Getty Images hide caption

Sherry Medrano, chief nurse at Roosevelt High School in Los Angeles, hands condoms to a student in her office. The school has teamed up with Planned Parenthood to combat teen pregnancy. Bob Owen/San Antonio Express-News hide caption