In the summer of 2014, biologist Nathan Stephenson was surveying giant sequoias in a clearing in Sequoia National Park. He looked up at the crown of a mature giant sequoia, hundreds of years old, and noticed that half of its leaves had turned brown.

In 35 years studying giant sequoias in

Source:: QUEST

Giant Sequoias Struggle with Drought 8 March,2017Andrea Aust

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