> This article was amended on 7 March 2020. An earlier version wrongly stated that “a solution of ethanol, hydrogen peroxide and bleach will disinfect surfaces"

> This article was amended on 7 March 2020. An earlier version wrongly stated that “a solution of ethanol, hydrogen peroxide and bleach will disinfect surfaces" Hydrogen peroxide and ethanol, when sprayed into a combustion chamber, make a dandy rocket propellant. Mix 4:1, H2O2:ethanol. Theoretical specific impulse of 245 seconds. Source: table from poster published by Rocketdyne division of North American Aviation Inc, early '60s (gift from Dad) Reader confidence in the author's scientific chops somewhat diminished.