Food production has affected the environment more than any other activity humans have engaged in. Humanity devotes more land to food production than anything else - roughly a third of the surface area of the earth, much of which was once forest but has been converted by humans into farms or grazing lands.
The world has a very serious problem, my friend' Shiva went on. 'Poor children still die by their millions. Westerners and the global rich -- like me -- live in post-scarcity society, while a billion people struggle to get enough to eat. And we're pushing the planet towards a tipping point, where the corals die and the forests burn and life becomes much, much harder. We have the resources to solve those problems, even now, but politics and economics and nationalism all get in the way. If we could access all those minds, though...