windows inside cav icing?

Hi i have a 1997 chev cav sedan...and all the windows tend to freeze up when it is left outside as i have no garage. Ice builds up very thick on the inside of the all windows so thick i cant scrape it off sometimes somebody said theres a trick to it. Something like turning the heat to half opening window sumthing i dont know. But y is this only happening to my vehicle...im 16 and live in nunavut so it is pretty cold

wet air on the inside possibly a leak somewere. had a simular probelm in an old truck... i used a hair drying and a power inverter to be quick. kinda stupid but it did work