And I thought I was a climate change extremist. Yes, climate change will reorder human civilization in terrible, horrible ways, but lets keep it in scientific fact and not hyperbole. That's a bad enough outcome for anyone.
1. Temp changes aren't the same across the planet. They're averages, with temps increasing much more in extreme northern and southern latitudes than mid latitudes. It will take more than 1.5 to 2 C to fail crops globally. A more important issue are changes in weather patterns with more extreme droughts and heavy rains. Crop yields, overall will drop, but global crop failure? BS.
2. Billions die? Why? Global crop failures at 1.5 to 2 C? I've already covered that. Global conflict due to water shortages? That's possible. And more like millions potentially in fragile places like south Asia and central Africa. Globally? Doubtful, but more realistic than 1,2 and 4.
3. 4 C? Humans extinct? Utter and complete BS. 100K years ago, maybe, as there were far fewer Homo sapiens on the plant. Now? Not going to happen. Total BS.
4. Ever hear of the PaleoceneEocene Thermal Maximum...PETM? Look it up. That was 5 to 8 C higher than today. Not a world I'd want to live in and getting their will destroy much of human civilization, but uninhabitable? Bullshit.
Lastly....No offense, but I call BS on your fallacy of authority towards the end. Your arguments aren't logical on their face, so I don't care how many degrees you have. Keep it real, folks, or our detractors will have a field day and climate change WILL run uncontrolled.