Speaking of vacations, anyone heard of pot tours? A travel company in Denver, Colorado has been quick to spot a business opportunity after the state legalised cannabis for recreational purposes in late 2012. The company started offering cannabis-themed holidays in the state from last year. It offers six "relaxing" options that include educating tourists on the virtues and versatility of cannabis and imbibing the stimulant in its various forms. Oh yes, along the way, you also get to enjoy the state's stunning natural beauty. That gives a whole new meaning to the lyrics of John Denver's Rocky Mountain High, which Colorado adopted as one of its state songs some years ago.