Scientists and regular folk know the pleasure chemicals our brain produces (which are similiar to THC in pot) can give you a feeling of euphoria similiar to getting high. Scientists have now discovered an additional benefit — these natural highs can clear away bad memories as well. [link] Unfortunately for those of you who get burnt regularly, but the THC in cannabis and the THC-like chemicals your brain makes are different. This means firing up a fatty to forget you flunked your driver's exam for the fifth time won't do any good. But if the benefits of a natural high are this great, how come Straight-edgers are always so bitter and depressed?