spreading the truths of marijuana

[cartex12]

Where i live kids who have never smoked marijuana are grossly misinformed about its facts. thinking that it reduces sperm, brain cells, is addictive, a gateway drug ect. Especially the new friends i have obtained. because of my recent drug testing and legal problems that i won't bother to go into i have been forced to make friends that are "straight". The friends i have aquired are very open minded however, and when i make legit points about the myths and facts surrounding marijuana, and drugs in general they are usually able to think reasonably. untill they go to school the next day and are fed more lies by brainwashed teachers. This is the problem with any debate on marijuana. A teacher of police officer's word is something highly regarded as true by anyone who does not know how corrupt they can be("straight" kids)(cops mostly corrupt, teachers misinformed) so even if a teacher of cop doesn't back up their evidence people are prone to take every word of their argument as absolute truth. I want to have facts about marijuana, backed up by undeniable scientific test and evidence to disprove the lies that kids belive. i want to have facts that i can repeat and win any debate on marijuana. i want to prove that the teachers and cops, and posters in the health classes are lieing, and that most of the time, even when they are approaching a truth, they are seriously exaggerating it.
please give me these facts with scientific evidence, because the don't knock it till you've tried it technique is not working so well, and think the whole world needs the know the truths about marijuana.