I don't know about houseflies, but we definitely caught a lot of fruit flies with our vinegar bowl. Hooray science!

  • I first saw this problem on the Google Labs Aptitude Test. A professor and I filled a blackboard without getting anywhere. Have fun.
  • Facebook defines relationships. 'Yeah, we would have broken up last night, but the net connection was down.'

  • Contributed by Sterling Clover

  • Contributed by Tim Chevalier

  • Contributed by Andrew J. Bromage

  • Contributed by Andrew J. Bromage

  • Contributed by Tim Chevalier