The document discusses why wearing sunscreen and using other sun protection methods is important. It explains that the sun gives off ultraviolet rays (UVRs) that can damage skin and potentially cause skin cancer if exposed to too much. Skin cancer is a serious condition that involves the overdevelopment of skin cells from sun exposure, which can become a harmful virus in the body if the cells enter the bloodstream. The document emphasizes protecting skin from UVRs to prevent skin damage and cancer.