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fanglazy t1_j2e6816 wrote

Reply to comment by Chrontius in In opposite : could you list things cheap today that will be unaffordable in 2030 ? (and why) by salutbobby

Today I leaned that helium is a non renewable resource typically found in natural gas deposits and is used for way more vital things than balloons.

https://www.blm.gov/programs/energy-and-minerals/helium/about-helium#:~:text=Where%20does%20helium%20come%20from,0.3%20percent%20and%202.7%20percent).

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Chrontius t1_j2e93d6 wrote

Got it in one. It's also a pretty vital consumable in most every high-performance rocket; it's literally the only pressurant suitable for liquid hydrogen that isn't hydrogen itself.

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