If there is one thing you do today it should be checking out this amazing talk by one of my very favorite writers/speakers/thinkers Graham Hancock. In it he discusses marijuana, ayahuasca, and most importantly the right to sovereignty over our own consciousness.
By the way, as you can see by the title of this video, TED idiotically, ignorantly, stupidly removed this talk and there was a whole debacle surrounding it. I was lucky enough to become a friend of Graham's on facebook before he reached his limit so I had to pleasure of watching this TED's unbelievable antics unfold. I don't want to get into it here because I don't want that to be what this post is about. The important thing is that this is an amazing and very important video to watch, and all and any charges and critisicms lobbed at it by the TED people are bullshit.