https://www.nationalgeographic.com/magazine/2017/06/lava-tubes-hawaii-caves/
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Amazing lava tubes in Hawaii
Author: Sic
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Evidence of ancient floods
https://twitter.com/forbesricky/status/1317140452424839172
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Leather made from Cactus? What?
You can make Oxygen and Methane without life, but to have them both together requires life. Watch this really creative video explore some “science” of how life in other worlds could have evolved.
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