Mr. Purple Cat Esq. Also what a terrible waste of helium. Because of helium being widely frivolously wasted in balloons, scientists cant afford to use it legitimately for science!!
jfcaron_ca Helium didn't become scarce & expensive until the later 90s when MRIs became commonplace and the LHC was starting up. Even science labs that used helium would just vent it to the atmosphere instead of recycling it. Nowadays it's a financial necessity to reclaim as much as you can.
RockBolt No one knows where they went, problem solved!