Reply #26: That actually could be worth tons of cash one day.

[krispos42]

We're running out of helium. It's produced by the decay of radioactive elements, which is why we have to drill for it, to tap into a reservoir of helium created over the course of millions of years by the spontanious fission of, say, uranium.

And we're running out. The natural process takes millions of years to make it, and we can only make it on earth via atomic bombs (fusion bombs). And helium is a critical compound for ultra-low-temperature cooling of materials, like in supercomputers and superconductor research.

The more we use for blimps and dirigibles, the less we have for that kind of cutting edge applications. So one day... that's stuff is going to be worth a fortune!