Edward Craven Walker
publication date: Friday, January 5, 2018 (part of Winter 2018)
category: Inventions
clue: His inventions lit up the 1960s counter-culture, and he did his part by operating a naturist resort.
explanation: Walker invented the lava lamp, which he called the Astro lamp. more…
intended difficulty: medium
solved by: Russ Wilhelm, LaVonne Lemler, Samir Mehta, Chris Lemler, Matthew Preston, and Erik Bates