This sunburn scare needs to go away already. Kids aren't getting skin cancer en masse from playing outside for a little bit each day.
Outdoor classes used to be pretty common, so being outdoors isn't even necessarily bad for learning maths...
Outdoor classes used to be pretty common, so being outdoors isn't even necessarily bad for learning maths...
https://www.researchgate.net/publication/348839525/figure/fi...
That means UV exposure outdoors is worse now than it used to be.
Unfortunately, it seems nobody measured UV at ground level before we started destroying the ozone layer, but there are barely any historical accounts of serious sunburn before ~1930. Everyone just talks of heat stroke and dehydration rather than actual burning/peeling of the skin.
It isn't about cancer. It is about modern standards of beauty. Sun ages skin. People learned to avoid the sun because of cancer, but they hide in the shade today to keep their skin looking youthful.
Tanning certainly ages skin. But just being outdoors, going about your day, wearing sensible clothing?