In Elizabeth Kolbert’s The Sixth Extinction: An Unnatural History, the author concludes that human behavior is on the verge of causing (or may have already caused) a mass-extinction—the sixth in the history of the planet. It is amazing that our species has not already gone extinct. I don’t think there is a single thing derived from nature in this photo. Imagine no power and no Internet. If civilization as we know it collapsed, we wouldn’t last a month. My ex once punched a ho