Scientists race to learn how marijuana affects the brain
Clip: 7/10/2019 | 9m 22sVideo has Closed Captions
Scientists race to learn how marijuana affects the brain
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 percent a generation ago. But as science correspondent Miles O'Brien reports, the effects of cannabis on the human brain are still relatively unknown.
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Major corporate funding for the PBS News Hour is provided by BDO, BNSF, Consumer Cellular, American Cruise Lines, and Raymond James. Funding for the PBS NewsHour Weekend is provided by...
Scientists race to learn how marijuana affects the brain
Clip: 7/10/2019 | 9m 22sVideo has Closed Captions
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 percent a generation ago. But as science correspondent Miles O'Brien reports, the effects of cannabis on the human brain are still relatively unknown.
Problems playing video? | Closed Captioning Feedback
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Major corporate funding for the PBS News Hour is provided by BDO, BNSF, Consumer Cellular, American Cruise Lines, and Raymond James. Funding for the PBS NewsHour Weekend is provided by...