this post was submitted on 26 Jan 2024
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[–] squaresinger@feddit.de 37 points 9 months ago (18 children)

One relevant part that I couldn't really find in the article is that helium is so light that it escapes Earth's atmosphere when released into the air.

So any helium that is released to the air is permanently gone.

There is also no known way to synthesize helium, and it also doesn't renew itself at all on Earth.

It's also the only substance we have to cool stuff really far down. That's why e.g. MRIs depend on it.

And we put this precious, finite and often life saving substance into kids' balloons to make them bobble nicely through the air.

[–] Gurfaild@feddit.de 10 points 9 months ago (4 children)

It does somewhat renew itself due to alpha decay, but that probably isn't fast enough to matter.

[–] user134450@feddit.de 7 points 9 months ago* (last edited 9 months ago) (1 children)

from the wiki article on Helium:

an estimated 3000 metric tons of helium are generated per year throughout the lithosphere.

I think the main issue here is not that we are loosing helium on a planetary scale but that the easy to reach helium from gas wells is wasted. We will never run out of helium at our current rate of consumption before the sun goes nova, if we consider all sources on earth, but it will get a lot more expensive and the supply will get less steady.

[–] squaresinger@feddit.de 7 points 9 months ago (1 children)

But we are consuming about 6 million tons per year (https://www.chemanalyst.com/industry-report/helium-gas-market-578).

The 3000 tons are just a drop in the water and it's pretty much impossible to get to all that.

[–] user134450@feddit.de 6 points 9 months ago* (last edited 9 months ago) (1 children)

oh i must have missed a few orders of magnitude there. 6Mt of helium is a ridiculous amount though ... what is all that used for? according to WA that is about the water volume of the three gorges dam at STP

Edit: just read the report, wow, more than a quarter of all the helium is used just for "breathing mixes" which i assume means its for scuba diving.

[–] squaresinger@feddit.de 4 points 9 months ago

There's quite a large amount of the usage which could be labelled "for fun".

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