March of Dimes WalkAmerica, the nation's oldest and most popular walking event, is taking place in 1,100 communities across the country this spring. Millions of walkers, volunteers and donors participate each year to help save babies from serious threats like premature birth, a problem that jeopardizes the lives and health of more than half a million babies every year in the U.S. To find a WalkAmerica event near you and to register online go to www.walkamerica.org.

Learn more about preterm birth and how you can prevent it:

9 Questions to Help You Get Your 9 Months

Preterm Labor: What Dad Can Do

Preterm Labor: What You Need to Know

A Mommy After 35

Treating Preterm Labor