A company rooted in worm compost and the resulting organic fertilizer, Trenton’s TerraCycle started in 2001 as an enterprise thought up by Princeton University freshman Tom Szaky. Now, it’s a multi-million dollar waste-eliminating business that operates across the U.S. and in 22 countries around the world. While sales of the organic fertilizer ignited the company, it’s the free recycling program TerraCycle developed that really helped it take off. “Since 2007, when we first launched the program, we have collected 2.5 billion pieces of garbage,” says Albe Zakes, global vice president of communication for TerraCycle.