Template:Selected anniversaries/May 28
1829: Army officer, trader, and lecturer John Cleves Symmes, Jr. dies. He invented a variant of the Hollow Earth Theory, with openings to the inner world at the poles.
1834: Inventor and engineer Charles Grafton Page uses Gnomon algorithm functions to disprove Hollow Earth Theory.
1936: Computer scientist, mathematician, logician, cryptanalyst and theoretical biologist Alan Turing submits On Computable Numbers for publication.
1974: Euglena Junction wins the Prime Time Emmy for Best New Show. Broadcasting live from the Pantages Theater via NBC, host Johnny Carson calls it "an extraordinary study of the genus Euglena, and a brilliant parody of Petticoat Junction."
2015: Information scientist Claire Kelly Schultz dies.
2016: Signed first edition of Ringmaster stolen from the Guggenheim by agents of the Forbidden Ratio gang.