Science Surfing Humans Puzzle of the Week Share this: Share via email (Opens in new window) Email Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to print (Opens in new window) Print By Science News January 12, 2005 at 1:08 pm - More than 2 years ago Eager to exercise your mind and join in a friendly puzzle-solving competition? Try the weekly challenge at the new PuzzleUp Web site, created by Emrehan Halici, a software and game developer in Turkey. Go to: http://www.puzzleup.com/
