when will discovery channel shows us about mj?

'This program is scheduled to air on January 13 and three dates thereafter in the United Kingdom. Inquiries directed to Discovery Communications indicate there are no plans at this time to air the program in the United States. This doesn't mean it won't eventually be aired in the U.S.; only that it's not currently scheduled to be aired in the U.S.'

I don't know but Biography channel shows a lot.