<p>Marijuana is cultivated in nearly every region of the world, from the jungles of Laos to the bedsits of Manchester - and is smoked and enjoyed for medicinal, recreational and spiritual purposes by an estimated 200 million people worldwide. In Pot Planet, Brian Preston set out on a global ganja safari to explore strange new cannabis cultures, to seek out new growers activists and other reefer revolutionaries... and to boldly get baked with each...