There are several completely different types of skin cancer-some are related
to sunlight exposure and some are not. The kind that is on the increase is
related but it is not the most deadly. Whether or not sunsreen does any good
is in question-current research is aimed at finding out what happens to the
energy that the sunscreen encounters and how it is dissipated. My paleolithic
ancestor told me that they wore sunglasses in the subway so as to blend in
with the other riders.