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When skiing, if the weather is good, I often come back with a better tan than if I have been at the beach. Obviously with altitude, there is less blocking of UV rays by the atmosphere. But how muc...
#1: Attribution notice removed
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System
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2020-05-27T11:08:39Z (over 4 years ago)
Source: https://outdoors.stackexchange.com/q/1864 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/