According to a survey, the American Academy of Dermatology says Philadelphians seem to know their "sun smarts."
Nearly 7 in 10 say they check their skin every year for changes in moles or other spots.
But more than half have never been screened by a doctor or nurse.
And more than half don't know that exposure to indoor ultraviolet rays - such as from tanning beds - are as dangerous as time in the sun.
Many places are offering free skin cancer screenings during May. They include: Jefferson University Hospitals - May 19 12:30-3:30 PM Jefferson Dermatology Associates 833 Chestnut Street, Suite 740 Philadelphia, PA 19107 Registration needed - 1-800-JEFF-NOW Rite Aid/Skin Cancer Foundation May 18 10 AM-12 PM Rite Aid 9920 Bustleton Avenue Philadelphia, PA 19115 May 21 10 AM - 12 PM Rite Aid 1400 West Main Street Jeffersonville, PA 19403 May 22 10 AM - 12PM Rite Aid 2210 State Hill Road Wyomissing, PA 19610 University of Pennsylvania Health System - May 22 8 AM-12:00 PM Perelman Center for Advanced Medicine 3400 Civic Center Blvd Philadelphia, PA 19104 Registration needed - 215-662-2737 or find a doctor close to you offering free screenings, by going to <"http://www.aad.org/SkinCancerScreening/LocationSearch.aspx">Free Skin Cancer Screenings.