Emissions of course as well as farmed livestock and industry and lifestyles in general.
Click the image to enlarge..
Corn and wheat are pure heat..
As are many of the other top crops.
Even apples and oranges and grapes and potatoes..
Growing and feeding seven and a half billion people.
Not too mention housing and clothing and warming and cooling seven and a half billion people and all of their piss and shit even.
We have created a monster..
Dining in luxury..
Drinking alcohol and caffeine..