Why Is It So?Why Is It So?3 seasonsFavoriteWatchlistRateAdd to listVideosProfessor shocks himself on Why Is It So?Top castJulius Sumner MillerSeasonsSeason 115 epsSeason 215 epsSeason 316 epsDetailsStatusReturning SeriesLast air dateSeptember 8, 2012Seasons3Episodes46NetworkPBSOriginal languageEN