In 1969, Carl Sagan wrote anonymously that marijuana helped him reach "devastating insights." If he were writing today, he might use his real name. The stigma of dope is seemingly going up in smoke - but there are still surprisingly few studies on the drug. In 2014, Alaska, Oregon and the District of Columbia legalized recreational marijuana, and sales began in Colorado and Washington, which adopted similar measures in 2012. Twenty-three states now allow the use of medical marijuana. In a February poll by the Pew Research Center, a majority of Americans - 54 percent - said pot should be legal. Just four years ago, 41 percent supported legalization. But the growing acceptance of marijuana has done little to ease research restrictions. The federal government still classifies pot as a highly restricted drug, and it can take years to secure approval for studies. Even in states where researchers can legally buy top strains like Ghost Train Haze at the corner pot store for their personal use, they must use a single federally approved strain for their studies. Yet that strain is low on a chemical credited with many of the plant's touted medical benefits.
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机译：1969年，卡尔·萨根（Carl Sagan）匿名写道，大麻帮助他取得了“毁灭性的见解”。如果他今天在写作，他可能会使用他的真实姓名。浓烟的污名似乎在烟雾中上升-但令人惊讶的是，对该药物的研究仍然很少。 2014年，阿拉斯加，俄勒冈州和哥伦比亚特区将休闲大麻合法化，并在科罗拉多州和华盛顿开始销售，2012年采取了类似措施。目前，有23个州允许使用医用大麻。在皮尤研究中心（Pew Research Center）2月份的一项民意测验中，大多数美国人（54％）表示锅应该合法。就在四年前，有41％的人支持合法化。但是，人们对大麻的日益接受并没有减轻缓解研究的限制。联邦政府仍将大麻归类为高度限制药物，可能需要数年才能获得研究批准。即使在研究人员可以合法地在角罐店购买诸如Ghost Train Haze之类的顶级菌株供个人使用的州，他们也必须使用一种联邦认可的菌株进行研究。然而，这种菌株的化学物质含量低，却可以称得上是该工厂许多被吹捧的医学益处。
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