Those visiting Colorado typically cite the state's natural beauty and abundant outdoor activities as their main motivators. But a new crop of tourist just鈥�

Update 2.16.2016: The USDA has reversed its decision on certifying organic hemp, our original story continues below.Colorado is now home to some of the鈥�

At Colorado Harvest Company, one of the state's largest marijuana businesses, pot is grown in coco fiber rather than soil, a substance with no nutrient鈥�

Now that recreational use of marijuana is legal in four states, law enforcement officials are looking for quicker ways to test drivers for excessive pot use. Entrepreneurs are taking on the challenge.