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[deleted] t1_ixhy6pm wrote

Reply to comment by RockItGuyDC in TIL the balloons in the Macy's Thanksgiving Day Parade were introduced in 1928 to replace live zoo animals. by NotLaFontaine

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RockItGuyDC t1_ixi262x wrote

It's literally of a quality that cannot be used for scientific or medical uses, nor can be refined further. You do realize that gases come in different qualities defined by standards, right?

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