handwashing
Tiny turtles are cute, but they can spread salmonella and make children very sick. susan.k./Getty Images hide caption
Jack Gilbert, co-author of the book "Dirt Is Good," says kids should be encouraged to get dirty, play with animals and eat colorful vegetables. Elizabethsalleebauer/Getty Images/RooM RF hide caption
Yes, soap is good. It helps dislodge those microbes. But some experts say: Wet your hands first, then add soap. Ulrich Baumgarten/Getty Images hide caption
Nigerian pop star Sunny Neji hopes that his music video, "Wash Your Hands O!," inspires kids to scrub up. Screenshot by NPR/YouTube hide caption
Hand-washing: one of public health's most powerful weapons, or undue regulatory burden? iStockphoto hide caption