We all know driving too much (in a non-efficient vehicle) sucks for the planet but an interesting new study now notes that driving too much may also increase your risk for skin cancer.
Among a sample of 1,050 patients facial skin cancers were found to occur more often on the left-side — the side that's next to the window while driving. The findings were most significant for men.
Of course you can lower pollution by biking or walking, but your skin will still be at risk. I'd suggest checking out Skin Deep for a safe suncreen with an SPF of 30+.