cannabineer
Ursus marijanus
Heat is half the story.At what point will our newly adjusted technological global society begin to fail at agriculture? Heat alone will begin to kill unprotected people in this decade. Unmitigated methane release is NOT mitigatable by any known method. Uncontrolled release from melting permafrost and deep sea methane deposits regardless of the longevity of the gas in the atmosphere will spiral.
At what point will society begin to collapse and how will people cope with heat when that collapse occurs and artificial cooling is no longer sustainable?
Sure, we can as a race survive fires, inundation and extreme weather events but at the core is still unsurvivable heat and the failure of crops.
Humans begin to die at a wet bulb temperature of 95 f. This can equate to a 50 humidity temperature of 109.
109 is no longer a rarity in many locations.
It is true that humans tend to acclimatize to heat in as little as six weeks but how far can this acclimatization extend? How can the modern countries have their population adapt when they spend a portion but not all of their time in air conditioned spaces?
It is true that cereal crops can be preserved by moving north and south but now, again, we are disrupting geopolitical situations.
Imo the larger imminent threat is the change in patterns and amounts of seasonal rainfall.
We saw the Mississippi and the Danube all but dry up in two of the world’s breadbaskets.
Here in the Southwest, demand on the Colorado River has grown while the watershed yields half what it did.
These are only the precursors of likely desertification of much of the tropics and mid-latitudes where most people live.
I expect wars over water to be a major theme of the second half of this century.