During his last year in college, Tom Szaky began to question why garbage exists and why some products are recyclable and others aren’t. What he found was economics and the value of materials determined what could be reused. He founded TerraCycle in an effort to recycle the unrecyclable. He now operates in 21 countries and continues to grow without competition. By partnering with others to reuse materials such as cigarette butts and ocean plastics, he’s built an entire business that not only helps a company’s bottom line but makes a real difference as well.