Graphic showing how UV radiation on Earth has changed over the last 2.4 billion years (IMAGE)

University of Leeds

Graphic showing how UV radiation on Earth has changed over the last 2.4 billion years

Caption

Graphic showing how UV radiation on Earth has changed over the last 2.4 billion years

Credit

Please credit: Gregory Cooke/ Royal Society Open Science

Usage Restrictions

Credit must be given to the creator.

License

CC BY

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