On the Edge: Total Destruction

When I hear the phrase “on the edge,” the irresistible image is the proverbial lemmings marching resolutely to the cliff.

For the first time in history, humans are now poised to destroy the prospects for decent existence, and much of life. The rate of species destruction today is at about the level of 65 million years ago, when a major catastrophe, probably a huge asteroid, ended the age of the dinosaurs, opening the way for mammals to proliferate. The difference is that today we are the asteroid, and the way will very likely be opened to beetles and bacteria when we have done our work.