I picked up a magazine and held it between the window and the left side of my face, shielding the left side of my face from the blazing sun. Then I remembered that all three of my skin cancers were on the left side of my face. Then I wondered if the sun through my driver's side window caused my cancers. Headed south in the morning, the left side of a driver's face is in the sun. Headed north in the afternoon, the left side of a driver's face is in the sun.
Safety glass offers no protection from UV light.
Inexpensive UV filter film does. I e-mailed my concerns to the Centers for Disease Control and to the American Medical Association. Alas, they didn't answer me. Those lofty organizations must not listen to lowly anthropologists. If there are, as I suspect, many more facial skin cancers on the left side than the right side, write a paper and submit it to JAMA .