Having lived in the UK and Australia, they're not kidding when they have don't get skin cancer promotions. The most remembered one from my youth is Slip, Slop, Slap. So Australian. Slip on a shirt, Slop on some suncream and Slap on a hat.

And yet mostly living in Australia, (was only in the grey UK from 2.5 years in our 20's), I'm still vitamin D deficient, because the majority of my life I've been inside on computers, presumably like a large percentage of Hacker News readers.

Ironically, our suncream QA is crap and all of the supposedly good sunscreens with high SPF factors failed indepdent testing - even including the one recommended by the Cancer Council.