FoodCorps grows food for education and change

In an effort to battle the increasing number of childhood obesity cases in the United States, FoodCorps is turning to schools. Rather than just teaching the basics of healthy eating, they're tapping into a generation of passionate young adults to make health food more real.

Conflict & Justice

Strands of Evidence: Hair Forensics

What you eat ends up in your hair. Scientists in the US and Europe have used this basic idea to devise a sort of hair-based GPS tracking system. Law enforcement agencies are now using this technique to solve crimes. NOVA's Ari Daniel Shapiro reports.