By Rachel Nania, AARP, July 9, 2021 The dangerous skin cancer can take on odd forms and pop up in unexpected places. Nearly 100,000 Americans are diagnosed with melanoma each year, making it one of the most common types of cancer in the U.S., especially among older adults who have endured decades of sun exposure and whose immune systems aren't as robust as they once were. And while melanoma can be deadly, it is highly curable if caught early. Do you know what to look for? The