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National Geographic news
6y
Diaries from Walden Pond Offer A Gauge of Climate Change
During his daily wanderings through field and forest, he also noted when migrating birds returned, when leaves burst forth on trees, and when the ice melted on Walden Pond. Some 160 years later ...
6mon
on MSN
Flooding, bacteria, hostility: So much for Walden Pond’s tranquility
Walden Pond is also frequented in summer by walkers and bird watchers ... where the timber doorway frames a forgettable view ...
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