Joshua Glenn is a consulting semiotician and editor of the websites HiLobrow and Semiovox. The first to describe 1900-1935 as science fiction's ""Radium Age,"" he is editor of the MIT Press's series of reissued proto-sf stories from that period. He is coauthor and coeditor of various books including the family activities guide Unbored (2012), The Adventurer's Glossary (2021), and Lost Objects (2022). In the 1990s, he published the indie intellectual journal Hermenaut.
""The tales collected here by Joshua Glenn offer a rich origin story for the ‘superhuman,’ a sci-fi trope that would go on to launch a million comic books . . . and which, in our era of the more-than-human AI, is a prescient one."" —Ann Nocenti, Marvel and DC comic book writer ""Provides essential background on the rise to dominance of superhumans in our own pop culture."" —The Toronto Star