"“Right now, we are using 70 per cent of all our agricultural capacity to grow meat through livestock,” Professor Mark Post, the lead researcher, told the Independent at a conference in Vancouver last year. “You are going to need alternatives. If we don’t do anything, meat will become a luxury food and will become very expensive . . . ”
"“Livestock also contributes a lot to greenhouse gas emissions, more so than our entire transport system,” explained Post, a medical physiologist at Maastricht University in the Netherlands. “Livestock produces 39 per cent of global methane, 5 per cent of the CO2, and 40 per cent of the nitrous oxide. Eventually, we will have an eco-tax on meat.” On meat raised in the open air, that is."
Full article: The world’s most important hamburger.