Walden Pond trees leafing out far earlier than in Thoreau’s time

January 14, 2014

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http://feedproxy.google.com/~r/sciencedaily/~3/jP5SOf7oIGs/140113114756.htm

Climate-change studies show leaf-out times of trees and shrubs at Walden Pond are an average of 18 days earlier than when Henry David Thoreau made his observations there in the 1850s.

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