This article was originally published with the title “Valve for Flush Tanks” in Scientific American Magazine Vol. 100 No. 13 (March 1909), p. 247 doi:10.1038 ...

PISCATAWAY, N.J.– The year 2020 was certainly one for the toilet, from canceled vacations and missed parties to murder hornets and the challenges of navigating a global pandemic. A recent survey ...