WASTE OUTPACED: At 19, Tom Szaky ’05 began a grass-roots empire built on worm poop. Szaky’s fertilizer, made from worm waste and packaged in used soda bottles, led Trenton-based TerraCycle to enter the global recycling industry. TerraCycle estimates that since 2007 it has kept almost 4 billion pieces of waste from landfills worldwide, primarily by finding ways to convert garbage into plastic pellets that can be used to make things like park benches and playgrounds.

Ricardo Barros