Behold, the case of a 69-year-old truck driver who spent 30 years on the big rig. Driver's arm more tan? the left side of our body, the one exposed to the sun when driving is particularly vulnerable to UV rays. Northwestern University researchers were amazed to stumble upon this particular truck driver as a prime human example of just how damaging these rays can be.
Heres why you need to wear sunscreen. This is what sun damage looks like.