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Should We Block the Sun? Scientists Say the Time Has Come to Study It. - The New York Times
Clouds don't block UV light, and temperature doesn't affect UV light either. Sun damage can occur on cloudy days or in the winter. … | Cloudy day, Uv light, Cloudy
Do I need sunscreen on a day with extreme UV levels if it's cloudy? › Ask an Expert (ABC Science)
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Dr. Jamuna Pai's SkinLab - Block sun damage! Most of us believe that we don't need sunscreen on a cloudy day. What we don't know is that clouds only block 20% of
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Visionary Family Eye Care - Be sure to wear your sunwear even on cloudy days! Clouds don't prevent UV rays from reaching your eyes. | Facebook
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