Humans have been eating meat since, well, before we were human. But there are so many of us now eating so much meat that raising all those animals is having a big impact on the global environment, including the climate. That has people around the world scrambling for meat substitutes, but something better than those dry and pasty veggie burgers. Patrick Brown, founder and CEO of Impossible Foods, thinks he's hit the jackpot. His company invented a veggie burger that claims to