Adam Gadahn, also known as Azzam al-Amriki, is an American who grew up in Southern California, converted to Islam and joined al-Qaida. Here he speaks in a 106-minute-long video released Sept. 22, 2009. IntelCenter via AP hide caption

The U.S. burned 138 billion gallons of gas last year. Currently, gasoline contains up to 10 percent ethanol. The ethanol industry wants to increase that to 15 percent, but the oil industry has raised concerns. Jeff Brady/NPR hide caption

Wisconsin Sen. Russ Feingold has been running an ad featuring his support for provisions of the health law that guarantee children coverage even if they have pre-existing health problems. www.russfeingold.org hide caption

Darriel and Shelby Burnett. Shelby says she was unaware of what was going on in the country until she began watching Fox News. Now the government has "awakened a sleeping giant" in the Tea Party, she says. Tom Bullock/NPR hide caption

A Peace Corps Volunteer in Nepal teaches science classes to secondary school students, 1973 Courtesy of the Peace Corps hide caption