Thứ Sáu, 28 tháng 10, 2016

NPR News: How Is A 1,600-Year-Old Tree Weathering California's Drought?

How Is A 1,600-Year-Old Tree Weathering California's Drought?
Four years of too little water is killing millions of trees in the Sierra, yet some giant sequoias still thrive. Tree-climbing scientists are exploring sequoias branch by branch to find their secret.

Đọc tiếp trên NPR
October 28, 2016 at 02:44AM
Environment

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