Mathematical Diversions: Producing Helium from Hydrogen
In response to this story about a possible impending Helium shortage, someone suggested on Hacker News that perhaps someday we can use nuclear fusion to produce helium.
As it happens I'd idly chatted with my wife about that a few weeks ago, but that wasn't enough motivation to run the numbers. This was. Could we produce enough helium to satisfy our commercial production of it through fusion, if we just assume we have fusion?