Yep, it’s bleak, says expert who tested 1970s end-of-the-world prediction
theguardian.com
theguardian.com
Of course, the reality is that 1) it's only a problem for humans - nature doesn't care and will be fine, and 2) even losing 99% of humanity is not the end of the species. Some will adapt and thrive.
A lot of this comes form "Me the center of the universe" along with "Me living forever" thinking. Neither is a viable axiom for any decision making.
"...The planet has been through a lot worse than us. Been through earthquakes, volcanoes, plate tectonics, continental drift, solar flares, sun spots, magnetic storms, the magnetic reversal of the poles … hundreds of thousands of years of bombardment by comets and asteroids and meteors, worldwide floods, tidal waves, worldwide fires, erosion, cosmic rays, recurring ice ages … And we think some plastic bags and some aluminum cans are going to make a difference? The planet isn’t going anywhere. WE are!"
Right now, in some areas of Washington and Idaho, crops are yielding half of normal, due to the heat.
If such temperatures were to happen across the USA, just for a week or two, and this killed 50% of staple crops, that would be very bad indeed. Prices would shoot up, the poorest would not be able to afford food at all. If this happens multiple years in a row, tens of millions would die in the USA of famine.