mass extinction

This column is hopeful. I promise. The northern white rhinoceros is now functionally extinct. Sudan — the last male of his kind — passed away recently. There are two females remaining but obviously they can produce no more of their species without a male — and mating with nearby giraffes is not something in which they seem interested. This is not the end but the beginning. This is still the beginning of a great extinction, the sixth great extinction in earth’s history and the first one caused by humans. The others were caused by things like massive asteroid impacts creating damage equivalent to a million nuclear bombs, and judging by the humans I’ve met, I could picture us wreaking an equivalent amount of havoc.