Significant ice ages during the last three million years have enabled the build-up of stores of methane clathrates in shallow areas of the Arctic Ocean. These are now thawing.
Exponential rise in methane release from natural sources is creeping up on humanity as a runaway feedback triggered by human sources of CO2 release. It seems likely to me that this will exceed previous expectations of greenhouse warming and take humanity to catastrophic climate change fairly quickly.
Billions of lives are at stake. Australians will have to make horrible decisions about attempting collective self-defence versus joining the global collapse and attrition. That is assuming we can maintain sufficient agricultural stability to feed ourselves…
Of course, we have the option of immediate cessation of fossil fuel combustion. That is a hard one when we refer to our past lifestyle, but would be easier if only we could fully embody our potential futures.
Sapoty Brook, Main Arm