Is there evidence of the existence of the soul?

Although there is no conclusive evidence,there is "21 grams of experiments" related to this. According to this experiment, Duncan MacDougall weighed 6 subjects before and after they died in his experiment. Only one of them was 21 grams lighter. This then led us to believe that our soul existed and its weight was 21 grams. Check it out more here: http://en.wikipedia.org/wiki/21_grams_experiment