David Wartinger is awarded the Ig Nobel Prize in medicine for discovering that certain roller coasters can help hasten the passage of kidney stones Sept. 13 at Harvard's Sanders Theatre. Kevin Ly Sep. 17, 2018 Facebook Twitter Reddit Print David Wartinger is awarded the Ig Nobel Prize in medicine for discovering that certain roller coasters can help hasten the passage of kidney stones Sept. 13 at Harvard's Sanders Theatre. Kevin Ly