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How America Cut Down California's 2,000-Year-Old Giant Redwoods
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100 回視聴7高評価20:13WestboundArchive元のリリース: 2026-05-29

In the mid-19th century, American loggers used primitive hand tools like pump augers, springboards, and crosscut saws to fell 2,000-year-old giant redwoods, with the Discovery Tree being cut down in just 22 days in 1853; this massive deforestation, driven by lumber demand for San Francisco's reconstruction and mining operations, resulted in the loss of over 90% of old-growth coast redwood forests by the time conservation efforts began, though John Muir's advocacy eventually led to the protection of remaining groves through Sequoia and Yosemite National Parks.

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