Of course the article itself is specifically about high exposure to UV radiation, which I think for some time now has been regarded as not a good thing.........problem is try telling that to some people when you are slipping at places at high elevation and/or near the equator........

I note your pointing the thread in the direction of down-route behaviour, wiggy as you did with the one on cabin crew cancer rates. But this report relates specifically to high-altitude UV and the protection, or lack of, offered by aircraft windshields. Some pilots don't always wear sunglasses at altitude; they really should!