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400 000 beads in combating UV
Bashny.Net
Back in 2007, the Department for the protection of water resources in Los Angeles found that the reservoir Ivanhoe excessively exceeded the danger level of carcinogens formed when exposed to sunlight sveta.
To combat this phenomenon, it was decided to pour water on the surface of the 400 thousand black plastic balls that will absorb ultraviolet izluchenie.
Scheduled for completion by 2012, this experiment godu.
Source: mirfactov.com/
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