LISTEN | Loop's rise and fall: What On Earth27:55Who killed the 21st century milkman? Seven years ago, Tom Szaky convinced some of the world's biggest corporations to invest in an old-fashioned milkman-style solution to reducing waste. The Princeton University dropout-turned-global leader in recycling initiatives introduced Loop — a company that would deliver everything from piping hot Tim Hortons coffee to Unilever soap and Häagen-Dazs to your door in reusable, returnable packaging.