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UV light
At the top of the list is an increase in ultraviolet radiation.
What do I need to know about ultraviolet radiation and my skin?
And there was the natural action of ultraviolet radiation from the sun.
Ultraviolet radiation will hit Earth more fiercely than we have ever known.
But less ultraviolet radiation should mean fewer skin cancer cases, rather than more - all other things being the same.
So ultraviolet radiation from the Sun would have been felt more powerfully then, than now.
And many parents, concerned about the effects of ultraviolet radiation on the eye, are seeking to protect their children's eyes, too.
Ultraviolet radiation from sun exposure is the primary cause of skin cancer.
That will mean he'll be beaming out a large amount of ultraviolet radiation.
Ultraviolet radiation is most intense in the middle of a summer day when skies are clear.