Here’s a new version of the ecological footprint quiz. Despite the fact that I a) don’t own a car and b) walk virtually everywhere I go, I scored pretty badly in the travel category, and I think virtually all of it can be chalked up to air travel.

In his book Heat, George Monbiot tried to show that we could sufficiently reduce carbon emissions while still enjoying the essentials, and even conveniences, of modern society. Significantly, though, he concluded that there was simply no way to make mass air travel work in an environmentally sustainable way.