Pat Brown, Impossible’s founder, argues that we can’t fight climate change unless we get rid of cows. Pat Brown, Impossible’s founder, argues that we can’t fight climate change unless we get rid of cows. Cows are easy to love. Their eyes are a liquid brown, their noses inquisitive, their udders homely; small children thrill to their moo. Most people like them even better dead. Americans eat three hamburgers a week, so serving beef at your cookout is as patriotic as buying a gun. When progressive Democrats proposed a Green New Deal, earlier this year, leading Republicans labelled it a plot to “take away your hamburgers.” The former Trump adviser Sebastian Gorka characterized this plunder as “what Stalin dreamt about,” and Trump himself accused the Green New Deal of proposing to “permanently eliminate” cows. In fact, of course, its authors were merely advocating a sensible reduction in meat eating. Who would want to take away your hamburgers and eliminate cows? Well, Pat Brown does, and pronto. A sixty-five-year-old emeritus professor of biochemistry at Stanford University, Brown is the founder and C.E.O. of Impossible Foods. By developing plant-based beef, chicken, pork, lamb, da...