The lobby of TerraCycle's global headquarters is far from what might be expected for a company that reported $18.7 million in revenue in 2014. the company's core mission: reducing waste. Everything around us will become waste," says Tom Szaky, TerraCycle's chief executive officer. "Our focus is on anything that you cannot recycle today, and that is 75 percent of all objects in the world." Mr. Szaky founded TerraCycle in 2001 while a freshman at Princeton University. He and another student fed dining hall leftovers to worms and liquefied the worm compost, creating an organic and highly effective fertilizer. Lacking the money to package their product, the duo used soda bottles they retrieved from recycling bins as containers to peddle the worm poop. "That was the inspirational moment," says Szaky, who decided to drop out of Princeton to pursue TerraCycle as a full-time endeavor. "What got me very excited was ... waste as a business idea." Today, TerraCycle is an international leader in "recycling the unrecyclable," building off the worm compost idea and using other waste materials to craft new products. TerraCycle runs recycling programs in more than 350,000 locations in 22 countries. [They] devise a plan to deal with each type of waste, and then process the waste through refurbishing it into something useful or through reprocessing it for recycling.