The whole world has never come close to outpacing its ability to produce food. Right now, there is enough grain grown on earth to feed 10 billion vegetarians, said Joel E. Cohen, professor of populations at Rockefeller University and the author of “How Many People Can the Earth Support?” But much of it is being fed to cattle, the S.U.V.’s of the protein world, which are in turn guzzled by the world’s wealthy.
Theoretically, there is enough acreage already planted to keep the planet fed forever, because 10 billion humans is roughly where the United Nations predicts that the world population will plateau in 2060. But success depends on portion control; in the late 1980s, Brown University’s World Hunger Program calculated that the world then could sustain 5.5 billion vegetarians, 3.7 billion South Americans or 2.8 billion North Americans, who ate more animal protein than South Americans.
“Malthus Redux: Is Doomsday Upon Us, Again”
It’s heartening for the Grumpy Vegan to see a member of the academy catching up with what the animal rights movement has been saying for decades.
