Is it possible to build 'meat' out of plant protein?

Americans eat three times the world average of beef each year. However, with each pound requiring more than 50 gallons of water, producers in drought-stricken California are looking to find other ways to get protein into our diets. Dr. James Hamblin, a senior editor at The Atlantic Magazine, reports.
View video at: http://ift.tt/1RbcK27