Pine tree branches

Pine tree branches

昨日はスッキリとした秋晴れ。
だが、日中は駐めている自転車が倒れるほど風が強かった・・・。
室内でも、外から木の枝や葉の揺れる音が聞こえてきた。


■Pine Tree Branches Turned Into Effective Water Filtration Systems – Redorbit
http://www.redorbit.com/news/science/1113090139/pine-tree-branches-effective-water-filter-030714/


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