If heat causes kidney stones, why are they looking at South Carolina and not hotter places? I would suspect a high oxalate diet or other dietary causes before temperature when looking for kidney stones causes but that’s not the narrative.
High-oxalate foods:
Spinach
Rhubarb
Almonds and cashews
Miso soup
Grits
Baked potatoes with skin
Beets
Cocoa powder
Okra
Bran cereals and shredded wheat cereals
French fries
Raspberries
Stevia sweeteners
Sweet potatoes
Dehydration can cause kidney stones. I had them decades ago. Try to stay fully hydrated and avoided them most of my life since - except for a time when I was working hard outdoors in Arizona in the summer for a month. Just got behind on my water intake.
But how does “Global Warming” suggest we won’t have enough water to drink? These propogandists - NOT SCIENTISTS - are just bonkers!