In this Feb. 7, 2014, file photo, a special strain of medical marijuana known as Charlotte's Web grows inside a greenhouse, in a remote spot in the mountains west of Colorado Springs, Colo. (AP Photo/Brennan Linsley, File)
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In this Feb. 7, 2014, file photo, a special strain of medical marijuana known as Charlotte's Web grows inside a greenhouse, in a remote spot in the mountains west of Colorado Springs, Colo. (AP Photo/Brennan Linsley, File)
