It's October, so that could only mean one thing: the Ig Nobel Prizes. Hosted by Harvard University, the Ig Nobel Prizes are a parody of the Nobel Prizes, awarded to ten achievements that "first make people laugh, and then make them think." The following slides present this year's winners of the Ig Nobel Prizes.

Dan Meyer and Brian Witcombe were awarded an Ig Nobel last year for their research of sword swallowing and its side effects.