As usual stupid kevin is full of poop
we have lots and lots of good data. We know what global temperatures were pre- and post-Industrial Revolution.
There is no data prior ot 1880
A transition to a cleaner world wouldn't "upend the global economy." Failing to do that, however, would
Changing over to a technology that does not exist on a mass scale does destroy the economy. We have spent $8b for 8 electric chargers. If Florida was on solar power the entire state would have no electricity for a week
Misery, suffering, economic catastrophe, and millions of deaths, yes
Her are a few predictions of the world ending
https://www.aei.org/carpe-diem/18-spectacularly-wrong-apocalyptic-predictions-made-around-the-time-of-the-first-earth-day-in-1970-expect-more-this-year-2/
Green New Deal sponsor Rep. Alexandria Ocasio-Cortez. The latter said, “The world is going to end in 12 years if we don't address climate change.” Says Thunberg in her new book, “Around 2030 we will be in a position to set off an irreversible chain reaction beyond human control that will lead to the end of our civilization as we know it.”
Remember global cooling from the 1970's, we were going to starve to death. Paul Erlich said the planet was overpopulated
Al Gore said the global ice cap was going to melt
In January, 2006 — when promoting his Oscar-winning (yes, Oscar-winning) documentary, An Inconvenient Truth — Gore declared that unless we took “drastic measures” to reduce greenhouse gasses, the world would reach a “point of no return” in a mere ten years. He called it a “true planetary emergency.” Well, the ten years passed today, we’re still here, and the climate activists have postponed the apocalypse. Again.