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A comment on LA is dumping millions of plastic balls into its reservoir to tackle the drought. Parent comment

Re:LA is dumping millions of plastic balls into its reservoi... by DanBC on Thursday August 13, 2015 @04:35AM (#10052841)
Black is the best colour to absorb UV. You want the UV to not reach the water, so you want whatever is on top of the water to not allow UV past.
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