Wounded in war, Arne Duncan, breast cancer research
This week on Need to Know: Three potential breakthroughs in breast cancer treatment. A group of U.S. soldiers whose lives were forever changed by a rocket attack in Baghdad. An interview with activist Leymah Gbowee, whose work in Liberia helped bring down Charles Taylor's regime. And Education Secretary Arne Duncan on the Obama administration's push to revise No Child Left Behind.