The world is on fire: right now the Western U.S, Canada, Italy, Turkey, Greece. Where else? It’s possible that Finland is still burning, that the fires of Siberia continue to smother the North Pole with wildfire smoke not seen there, in recorded history, until now. While wildfires burn, ice and frozen ground melts. We cannot be sure, as temperatures continue to climb, that the Arctic tundra will remain permanently frozen year round. And now the air currents over the Atlantic Ocean, including the Gulf Stream, may be shutting down. As these events unfold, it is increasingly difficult to see them as isolated or to deny that we are experiencing their…