What effect has legalising marijuana had in the US?

  • 07/09/2017

Colin Hogg has been spending his time in the north-western states of the US, exploring what effects legalising marijuana has had on their society.

And now he has written a book about it, entitled The High Road: A Journey to the New Frontier of Cannabis.

Colin Hogg spoke to Duncan Garner.

Watch the video for the full interview.