Tourists tossing coins into UNESCO World Heritage ponds at Japan's Oshino Hakkai jumped from 4,400 recovered coins in 2024 to 18,000 in 2025. The coins corrode and leach metals, harming the delicate ecosystem.
Tourists tossing coins into UNESCO World Heritage ponds at Japan's Oshino Hakkai jumped from 4,400 recovered coins in 2024 to 18,000 in 2025. The coins corrode and leach metals, harming the delicate…
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