April 23-25, 2010 ~ Washington, DC. The EPA’s National Sustainable Design Expo held on the National Mall. The EPA’s P3 Award Competition (People, Prosperity and the Planet) is a competition focused on benefiting people, promoting prosperity, and protecting the planet through innovative designs to address challenges to sustainability in both the developed and developing world. The competition has two phases: initially, student teams compete for grants to research and develop their design projects. All of the P3 grant recipients then attend the National Sustainable Design Expo the following Spring to compete for the P3 Award and additional funding.