But then three high school students proceeded to do it. Do what you ask? Well just design an air conditioner that makes use of the Peltier effect and thus eliminates the need for Freon. In the process they won the Intel International Science and Engineering Fair. A 1964 study by General Motors said this wasn't possible, but these students did it anyway. So what impossible problems do you have? Maybe you should give these guys a call or better yet remove the word impossible from your dictionary.