These rays, although the strongest and most dangerous, are normally filtered by the ozone layer and do not reach the Earth. The earth's ozone layer is a protective shield of atmospheric gas that filters out certain wavelengths and affects the amount of ultraviolet radiation passing through the atmosphere. It prevents dangerous UV rays from reaching the earth. Man-made chemicals believed to destroy ozone is called chloroflourocarbons, which are used in aerosols and refrigeration. Reduction in the ozone layer may lead to greater exposure to UV radiation.
Sunburn is skin damage caused by overexposure to the sun.
It is extremely common, but it is important to be able to recognize it and treat it properly. Normally experienced as redness of the skin. Normally experienced as skin blisters and swelling. A person with this type of burn needs to seek the advice of doctor. What is the most useful service you find in TravelSmart.