[throwaway2037]

    > Helium is almost all captured from gas wells by cryogenically liquefying the nitrogen out of it.

This is wild. I never thought about how they separated gases from natural gas fields. The carbon footprint of each kg of that helium must be astonishingly large.

[wolvoleo]

Well yes but that's only if you consider the helium to be the only reason for the natural gas extraction which is obviously isn't.

It's more of a byproduct in that sense.

[citrin_ru]

I hope systems which separate helium: 1. have very good thermal insulation 2. use heat exchangers so separated gases can cool down incoming gas.