‘Polar Cities’ needed as ‘Noah’s Arks’ for Humankind in Face of Global Warming and A Methane Gas Release Worst Scenario?
NOTE: A methane worst case does not suddenly spell the extinction of human life on Earth. It does not lead to a runaway greenhouse. The worst-case methane scenario stands comparable to what CO2 can do. What CO2 will do, under business-as-usual, not in a wild blow-the-doors-off unpleasant surprise, but just in the absence of any pleasant surprises (like emission controls). At worst comparable to CO2 except that CO2 lasts essentially forever.