How a 17th-century metropolis escaped ecological collapse

How Japan saved its biggest city from collapse - Roman Krznaric · 5:55 · Video: TED-Ed · Watch at the source

In short: Four hundred years ago, Edo faced a crisis of deforestation, erosion, and flooding. This video explores how the city transformed itself into one of history's most efficient and sustainable examples of a circular economy.

Roman Krznaric examines the dramatic turnaround of Edo, Japan's largest city. Following years of intense logging that left the region vulnerable to timber shortages and natural disasters, the city implemented systemic changes to its resource management. By adopting circular economy principles, Edo transitioned from the brink of environmental failure into a thriving ecological and cultural center, providing a historical blueprint for urban sustainability.

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