Nice article! Here is another: Ghost ships, crop circles, and soft gold: A GPS m... | Hacker News

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thenthenthen 18 days ago | parent | context | favorite | on: Global demand for sand spawned a worldwide boom in...

Nice article! Here is another: Ghost ships, crop circles, and soft gold: A GPS mystery in Shanghai, https://www.technologyreview.com/2019/11/15/131940/ghost-shi...

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