Hi all!
Take a look at this...
http://news.bbc.co.uk/2/hi/health/6320405.stm
In summary, new research shows that people who spend a lot of time driving have increased chances of skin cancer. The windows block out most of the UVB (causes sunburn) but don't block UVA (penetrates deeper). This in turn causes skin cancer on the "window side" of the body.
I suppose that this is all obvious stuff, but what does it mean for pilots who spend vast ammounts of time high up above the protection of clouds etc?