Percival Lowell
publication date: Wednesday, April 25, 2012 (part of Spring 2012)
category: Paranormal
clue: When an Italian astronomer discovered "canals" on Mars, this American businessman devoted the rest of his life to popularizing the idea of a Martian civilization. Oddly, his contributions to science later led to the discovery of Pluto.
solved by: Russ Wilhelm, Steve West, LaVonne Lemler, Samir Mehta, Chris Lemler, Richard Slominsky, Justin Woods, Denise Sawicki, Matthew Preston, Erik Bates, Mike Rothstein, Steve Dunn, and Aaron Shurtleff