Earth Day falls on Monday, April 22, this year, and Old Navy has partnered up with trash-to-treasure eco company TerraCycle to turn old, used, or broken flip flops into material for playgrounds. TerraCycle was founded in 2001 and has since become one of the fastest growing green companies in the world. According to TerraCycle’s website, their purpose is to eliminate the idea of waste by recycling one man’s trash into another man’s treasure. Started by 20-year-old Princeton University freshman Tom Szaky in 2001, TerraCycle has diverted billions of units of waste by turning them into different recycled products with more than 20 million people in 20 countries participating worldwide.