Do you see the sunny scenery behind me? The sunlight provides UV radiation absorbed by the body to produce vitamin D which is essential to aid in teeth and bone development.
This makes it the perfect weather to dry clothes too! Some detergent powders contain fluorescent chemicals which glow in sunlight. These makes the clothes whiter than white in daylight. Like my sweater!
These are of course few of the many uses of UV radiation. Although they can be harmful, they are also useful in many cases!