Precautionary Principle

i think this should be more well known, it should be out there for people to read everyday. It answers all of those questions the "nay-sayers" have about is climate change real or not?

I think there is a youtube video that pretty much somes it up, ive watched this a dozen or so times, ever showed it to my class during my environmental awarness presentation (in high school)

http://www.youtube.com/watch?v=zORv8wwiadQ

Full credit goes to a man who goes by the name wonderingmind42, on youtube for making this video.