I’ve been in Toronto most of the week for two different marijuana investing conferences. Early in the week was The Cannabis Summit put on by The Economist magazine, and that was followed by the Life’s Cannabis Expo, which is the largest in Canada. I have to say, if you still doubt how much investors crave good information about marijuana opportunities, you should come to one of these conferences. The opportunity in legal marijuana continues to grow, as evidenced by the conferences I attended and more headlines this week. Let’s look at a few key developments this past week in important investing themes.