U.S. officials now say that Al Qaeda in Iraq leader, Abu Musab al-Zarqawi, initially survived a U.S. air strike. Officials had initially said the two 500-pound bombs dropped on a safe house north of Baghdad killed Zarqawi instantly.

We speak to Beth Daley of The Boston Globe about a series of cut backs to programs at NASA that researched climate.

The Association for American Medical Colleges thinks medical schools should increase enrollment. But a physician at Dartmouth Medical School says more doctors won't mean better healthcare.

We speak with the Grammy-winning violinist/fiddler/composer.