What do these Harvard guys know???!!
There is only one authority on weed and you can listen to him hear:
http://www.youtube.com/watch?v=gWhUqo9Aivs
I don't care what "research" shows. I am sure there is research somewhere that shows that drinking water, eating food, breathing air and having sex is bad for you. f*** research!!! Oh taste and see that weed is good. Try a joint today and see if "it don't change the quality of your mother******* life."