OZone stuff.
although this may be out of date.
Here's a newer article around Populated areas and ozone levels.
Because it would seem the antarctic hole is closing but new ones at populated areas are opening.
https://www.theguardian.com/environment/2018/feb/06/ozone-layer-not-recovering-over-populated-areas-scientists-warn
And another claiming the ozone is altogether missing in areas.
http://www.abc.net.au/news/science/2018-02-06/lower-stratosphere-atmosphere-ozone-layer-decline-climate/9400164
so with all that said..... https://www.coolibar.com/ has you covered, literally.
and those nasty UV rays? A B C.s
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