Watch 9:22
Does marijuana hurt or help your brain? Scientists rush to study the drug’s impact
As national attitudes and laws around cannabis use have evolved, so have the commercially grown strains of the plant. Some marijuana varieties today contain levels of THC, the drug’s psychoactive compound, as high as 50 percent, compared to around 5…
Watch 7:41
Consumption of marijuana edibles rises amidst scarce research into their health impact
As more states legalize recreational use of marijuana, edible forms of the drug are also becoming increasingly popular. But little research has been done on potential complications of consuming the substance, and some scientists believe they can cause hallucinogenic reactions.
U.S. expected to end policy that lets legal pot flourish
Attorney General Jeff Sessions is going after legalized marijuana in an expected announcement Thursday. Sessions is rescinding a policy that had let legalized marijuana flourish without federal intervention across the country.
The Alaska town that inspired ‘Northern Exposure’ is in a battle over legal pot
Talkeetna's first marijuana retail store is causing a rift not seen in other tourist-dependent towns in this Libertarian-leaning state, where marijuana had a casual acceptance long before it became legal. But even here, like in many pot-legal states, some towns…
Now legal in eight states, there are unanswered questions about the impact of recreational marijuana on public health. To maximize potency, pot can be purified for maximum THC, its psychoactive ingredient. But a lack of research and restrictions on these…
Late last year, Nebraska and Oklahoma filed a federal lawsuit asking the Supreme Court to declare Colorado's marijuana law unconstitutional, due to an influx of pot illegally entering those states. Now, as the Supreme Court decides whether to take up…
Living and teaching in Colorado for the past 30 years, I have seen tremendous societal and legislative changes in my state on the issue of marijuana.
The District of Columbia joined Colorado, Alaska and Washington state in legalizing recreational use and possession of marijuana. Federal law still outlaws the drug, however, putting the nation’s capital at the high-profile crossroads of both state and federal laws. Gwen…
Hari Sreenivasan reads viewer comments in response to last Saturday’s signature segment on the state of Nebraska suing the state of Colorado over the legalization of marijuana, which has increased the costs of law enforcement in the Cornhusker State.
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