All the gunk you see there filling San Francisco Bay is the environmental legacy of gold miners in the 1860's, who scoured the mountain valleys of California with high-pressure hoses in a last-ditch search for gold.https://twitter.com/ISSAboveYou/status/1448043988133371905 …
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I’m sorry but I’m finding that hard to believe especially without a source. It’s probably because I can’t wrap my head around the 150 years timescale involved here.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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