Cannabidiol, or CBD, is a compound that can be extracted from marijuana or from hemp. It doesn't get people high because it doesn't contain THC, the psychoactive component of the cannabis plant. Getty Images hide caption
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Friday
Wednesday
Studies have shown that the levels of THC, the main psychoactive compound in pot, rose dramatically in the U.S. from 1995 to 2017. David McNew/Getty Images hide caption
Highly Potent Weed Has Swept The Market, Raising Concerns About Health Risks
Thursday
A bipartisan group of attorneys general is urging Congress to pass legislation that would make it easier for banks to handle money involved in the legal cannabis industry. Brennan Linsley/AP hide caption
Wednesday
Cannabis: The Illegalization of Weed in America, by Box Brown First Second hide caption
Tuesday
Research shows a link between marijuana use and psychosis. Kirill Vasikev/EyeEm/Getty Images hide caption
Saturday
Marijuana plants grow in a marijuana cultivation facility on July 6, 2017 in Las Vegas, Nevada. Ethan Miller/Getty Images hide caption
Tuesday
A vendor points to a selection of cannabis strains for sale during a 2018 marijuana festival in California. Richard Vogel/AP hide caption
Sunday
Baltimore State's Attorney Marilyn Mosby walks through a city neighborhood on August 24, 2016. Larry French/Getty Images hide caption
Baltimore State's Attorney Will No Longer Prosecute Marijuana Possession Cases
Tuesday
The rain didn't stop customers from lining up outside Cultivate in Leicester, Mass., on Tuesday — the first day that sales of recreational marijuana became legal in the state. Steven Senne/AP hide caption
Wednesday
A soldier carries marijuana plants to be destroyed after a large plantation was seized in Hostotipaquillo, Mexico, in 2012. A new bill in Mexico's Congress would legalize pot, and with its authors' party in the majority, it is likely to pass. Bruno Gonzalez/AP hide caption
Wednesday
Canada legalized recreational marijuana in this month, but Canadians can find themselves barred from entering the U.S. if they say they've used it. A Canadian flag flies in Windsor, Ontario, in June, with the Detroit skyline visible behind it. Brittany Greeson/The Washington Post/Getty Images hide caption
Tuesday
Even a week without marijuana use improves young people's ability to learn and remember. BURGER/Canopy/Getty Images hide caption
Wednesday
A planter trims medicinal marijuana plants in Ontario in 2016. After months of preparation, Canada legalized recreational use of the drug on Wednesday. Lars Hagberg/AFP/Getty Images hide caption
Monday
Megan Baker (left) of Papa & Barkley Co., a Cannabis company based in Eureka, Calif., shows Shirley Avedon of Laguna Woods different products intended to help with pain relief. Stephanie O'Neill for NPR hide caption
Ticket To Ride: Pot Sellers Put Seniors On The Canna-Bus
Wednesday
Baby boomers who use marijuana seem to be using it more often than in previous years, a recent survey finds — 5.7 percent of respondents ages 50 to 64 said they'd tried it in the past month. The drug is also gaining popularity among people in their 70s and 80s. Manonallard/Getty Images hide caption