I dunno if it has anything to do with it, it's been said the earth has changed its tilt by 31.5 inches since 1993. Magnetic pole shift is supposed to also be happening over the course of a thousand years or so. Who knows what effect the earths core changing could/would/did have on things (slowing down).
All that to say this ole world ain't been the same one it started out as. No had nothing to do with global warming because of manmade issues. It has been changing since it was made, earthquakes, storms freezes have all had some impact on it.
With that said, I'm not on the side that lotion does or doesn't cause cancer, just might better use something if your fair skinned. If you're darker you probably still oughta wear something. But that is just an opinion as there are too many variables to conclusively say it as a blanket statement for everyone.
I can get pretty dark after fishing all day in the sun. I feel like I need it if I am on a multi day fishing trip.