Marijuana has become much more potent in the

Marijuana has become much more potent in the past few years. The illegal growers have selectively bred the more potent plants and the amount of the active ingredient —- known as THC — has increased from about 3 percent to about 15 percent. (Credit: iStock)

SHARE

More like this

Democratic presidential nominee Hillary Clinton gives two thumbs Some people still can't handle Hillary Clinton Democratic presidential candidate Hillary Clinton takes photographs with Fiscina: Are women obligated to vote for Clinton? Republican presidential candidate Donald Trump addresses an audience Opinion: I’ve run the numbers. Donald Trump will win

Comments