Science

Ever Wonder How They Test Marijuana For Safety? (VIDEO)

As marijuana goes mainstream in the U.S., people are asking new questions about weed. What makes some marijuana especially potent, for example, and how can marijuana be regulated to make sure legal weed doesn't send them on a bad trip?

For answers to those and other burning questions about the chemistry of cannabis, have a look at the new video (above) issued by the American Chemistry Society as part of its Reactions You Tube channel. The video explains how marijuana's active ingredient, tetrahydrocannabinol (THC), affects the brain, and how the marijuana-testing labs now springing up across the country test pot for safety and quality control.

To learn all the tricks of the trade in marijuana labs, check out the video.

50: Snoop Lion
Koen van Weel/AFP/Getty Images
47: Rihanna
VALERY HACHE/AFP/Getty Images
46: Hugh Hefner
Charley Gallay/Getty Images for Playboy
44: Bryan Cranston
Neilson Barnard/Getty Images
43: Robert Downey Jr
Joel Ryan/Invision/AP, file
40: Phil Jackson
Kevork Djansezian/Getty Images
In 1975 he wrote “Maverick,” a memoir about his days playing in the NBA. Among other things, Jackson spoke frankly about marijuana use. -- Salon
39: Sarah Palin
AP Photo/Carolyn Kaster, File
38: Justin Bieber
AP Photo/Mark J. Terrill
"Bieber both confirmed that he'd been caught smoking weed and apologized for it." -- Huffington Post
34: Conan O'Brien
Frederick M. Brown/Getty Images
30: Seth MacFarlane
AP Photo/Matt Sayles
29: Martha Stewart
Getty Images
27: Morgan Freeman
Frazer Harrison/Getty Images for AFI
21: Brad Pitt
Todd Williamson/Invision for Fox Searchlight/AP Images
20: Lady Gaga
D Dipasupil/Getty Images for The Daily Front Row
19: Michael Bloomberg
Andy Kropa/Invision/AP
15: Sanjay Gupta
Photo by Evan Agostini/Invision/AP, File
13: Andrew Cuomo
Photo by Andrew Burton/Getty Images
6: Jon Stewart
Charles Sykes/Invision/AP, File
3: Bill Clinton
STAN HONDA/AFP/Getty Images