fat

Modern man has become altogether too adapt at providing himself with food and he is required to do very little in the way of physical work to get it. The result is that he is getting fatter. It isn't healthy and it isn't attractive (there are exceptions to this).

In the process of producing, distributing, preparing, consuming and excreting all these surplus calories mankind is slowly but surely destroying the planet. That about sums it up I guess.

Fat is an environmental issue in both senses of the word.