quality control

The mystery of vaping deaths widens. What is going on? Let's ask Steve. We go back a long way, so when a tricky chemistry problem comes up we like to fire off an email, to pick his warped brain. Often he is right on the mark.
Last month, the New York State Attorney General (AG) had herbal supplements sold at GNC, Walgreens, Target, and Walmart tested, and found the supplements did not contain the herbs on the label 80 percent of