Public Health: Jillian Clarke of the Chicago High School for Agricultural Sciences, and then Howard University, for investigating the scientific validity of the Five-Second Rule about whether it’s safe to eat food that’s been dropped on the floor.

http://www.improb.com/ig/ig-pastwinners.html#ig2004
http://www.improb.com/ig/ig-pastwinners.html#ig2004
http://www.improb.com/ig/ig-pastwinners.html#ig2004