Ian Tregillis has started an interesting set of posts (link) on the coming shortage of Helium. This is something I hadn’t really thought much about. There is a limited supply of Helium on Earth. The US used to have most of the helium supply (fortunate geology). Then, we decided to sell it off at below market rates. The cheaper price increased demand. People used helium more than was wise. … Cool stuff.
Ian has now finished part 3 of this post series. Really well done.