Marijuana is in the headlines as more and more states legalize it for medicinal use or decriminalize it entirely. In the American Chemical Society’s newest Reactions video, the chemistry behind marijuana’s high is explained, and shows what scientists are doing to control the effect of legalized weed.

Here is the video:

The American Chemical Society (ACS)  is a nonprofit organization chartered by the U.S. Congress. With more than 161,000 members, ACS is the world’s largest scientific society and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. Its main offices are in Washington, D.C., and Columbus, Ohio.