A new study from Penn State is identifying a skin cancer cluster around farmland in the Commonwealth. Researchers say adults over the age of 50 are 57-percent more likely to develop melanoma in 15 counties in South Central Pennsylvania. The study determined counties with more cultivated cropland and higher herbicide use had significantly higher melanoma rates. Anyone concerned about their risk of skin cancer is encouraged to perform regular skin checks, and to also wear sun-protective clothing and sunscreen outdoors.