yarn xkcd-com@feeds.twtxt.net "Water Filtration You'd think the most expensive part would be the quark-gluon plasma chamber, but it's actually usually the tube to the top of t ..."

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Thu, Sep 5 8:00PM (42w ago)

Water Filtration
You'd think the most expensive part would be the quark-gluon plasma chamber, but it's actually usually the tube to the top of the atmosphere to carry the cosmic rays down. ⌘ Read more

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