AVOID POP-SCI FACTOIDS
I’m a great fan of Popular Mechanics, and have subscribed for years, so I apologise that I seem to keep nitpicking, but you have set yourselves a high standard that you now have to maintain!
The March 2016 issue had a piece on the US Navy’s electromagnetic railgun, in which it states “after storing up charge, the gun releases 1 200 volts in 10 milliseconds”. That is a statement with almost zero information content. A static charge built up on your body by rubbing with fur can discharge as much as 30 000 volts in a microsecond, which numerically trumps the railgun by more than five orders of magnitude, but is clearly not really a competitor.