Is ultraviolet dangerous?

Answer:
Ultraviolet rays (as all electromagnetic waves with more energy then the visible spectrum) can be dangerous to humans. UV tyically just reacts with the skin to cause burns, through prolonged exposure can cause mutations in the DNA of the skin, which causes skin cancer.
First answer by OreEle. Last edit by OreEle. Contributor trust: 27 [recommend contributor recommended]. Question popularity: 1 [recommend question].