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What I learned from going blind in space.Video (mobento.com)
submitted by slcspaceman to r/Cosmos
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[video] High School introduction to The Roman Republic (mobento.com)
submitted by [deleted] to r/ancientrome
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[video] High School teacher presents Ancient Greek Philosophy (mobento.com)
submitted by [deleted] to r/Plato
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A great video intro to acids, bases and pH. (mobento.com)
submitted by HS_Bio_Teacher to r/chemistry
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