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A comment on New York City mapped its trees and calculated each one’s economic benefits. Parent comment

Re:New York City mapped its trees and calculated each one’s ... by SixSigma on Friday December 02, 2016 @10:35AM (#13089400)
Surveys, the same way National Parks are valued at $92bn

http://time.com/money/4389722/national-parks-economic-value/

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