Voters in North Carolina and Indiana were ready and waiting as polling places opened this morning. The nomination battle between Democrats Barack Obama and Hillary Clinton is expected to draw heavy turnout through the day.

New intelligence reports say that Al Qaeda has re-grouped and found dynamic new leaders to replace the ones captured and killed after 9/11.

Measles is making a comeback with outbreaks of the highly contagious virus in nearly a dozen states, including New York , Pennsylvania and Arizona . Federal health officials trace some of the cases to unvaccinated people from other countries. We speak with Dr Tim Johnson, Medical Editor for ABC News and Here and Now contributor.

A group of physicians and public health experts have compiled a detailed report of how to ration healthcare during a pandemic. The 67-page document lists conditions ranging from Alzheimers to diabetes as reasons to turn patients away during a medical crisis. We talk to one of the report's authors, Dr Lewis Rubinson, about the report and its implications.

When Frances Richey's son joined the Army and went to Iraq , she started writing poems about how it feels to be a mother whose only son has gone off to war. Her writings have been collected in a new book called "The Warrior: A Mother's Story of a Son at War."