Can cameras “see” invisible light? This is Sandra Tsing Loh with The Loh Down on Science. My sunscreen protects against U-V-A and U-V-B, but what about U-V-C!?!?!? Yes, there is a THIRD type of U-V light! Fortunately we are protected from it by the earth’s ozone. UNfortunately, there are weak

Coral Conundrum

Could fun in the sun – mean grief in the reef? This is Sandra Tsing Loh with the Loh Down on Science. The sun’s ultraviolet rays cause suntans, sunburns… and an increased risk of skin cancer. Sunscreen protects our skin by using chemicals like oxybenzone to absorb harmful U-V rays.