3 Answers

+2 votes
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Best answer

Yes, the Navy stopped stockpiling helium (which is a by-product of natural gas) when they decided they didn't need it for blimps any more.

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Thanks for letting me know, that. 

+2 votes
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I didn't know that! I always send a balloon whenever I send anyone flowers for something.

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I didn't know until recently either.

+1 vote
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Helium is one of the lightest gas. So whenever it gets a chance, it escapes into the outer space. Once it gets there then humans can't catch it back to the Earth.

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Yes, that is correct. But additional helium is produced underground by alpha decay of radioactive materials.

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