For decades, people have used medical marijuana (or just plain toked up a doob) to ease chronic pain. But can sick ...

Kate Baggaley at 10:39 AM Oct 21 2016

Medical marijuana isn't always as advertised—at least not in the Seattle area, as one lab found out. The ...

Francie Diep at 07:40 AM Jun 5 2014
Science // 

As of 2013, 24 states and Washington, DC, have either legalized marijuana or decriminalized possession of it. One of ...

Martha Harbison at 05:28 AM Apr 24 2013
Science // 

Over in the US, 18 states (plus the District of Columbia) allow cannabis use for certain medical conditions. Despite ...

Shaunacy Ferro at 04:00 AM Apr 19 2013
Sign up for the Pop Sci newsletter
Australian Popular Science
ON SALE 01 FEBRUARY
PopSci Live