The CEO of Impossible Foods, the startup behind the wildly popular veggie burger backed by Serena Williams and Katy Perry, shares the biggest piece of advice he wishes he knew at age 20

· Impossible Foods CEO Pat Brown says the key to starting a successful company lies in finding a problem that matters in the world.
· His company, which he started in 2011, raised $300 billion last year putting it at a $2 billion valuation, and its meatless burgers can be found in thousands of restaurants across the...