Former U.S. Marine Sgt. Ryan Begin smokes medical marijuana at his home in Belfast, Maine. Begin had endured 35 surgeries after having his right elbow blown off by a roadside bomb in 2004. He is a proponent of legalizing pot for recreational use and allowing individual citizens the right to grow six plants. (AP Photo/Robert F. Bukaty)

As Cannabis Becomes Big Business, Who’s Getting Smoked?

More and more states are expanding access to medical and recreational marijuana, creating a “green rush” for venture capital firms eager to cash in on a fresh, extremely lucrative market.