Last week the Obama administration announced a plan to make school lunches healthier. We look back at an early grassroots effort to do the same.
Paulina Sanchez and Lesly Heredia didn't like seeing food get dumped in the trash at school. So they started a program to donate rather than waste.
By land, sea and air, the military is exploring ways to wean itself off fossil fuels. Here are 10 techs it hopes will help it reach its goal.
An extended interview with dumpster diver turned director Jeremy Seifert.