In yet another report that illustrates the dangers pot poses to the young, developing brain, a new British study finds teenagers are much more likely than adults to develop an addiction to marijuana. "We found that teenagers are three and a half times more likely to have severe cannabis use disorder, which is essentially cannabis addiction," said lead researcher Will Lawn, a lecturer in addiction psychology with King's College London. "That's a very important harm which teenagers should be informed of." However, marijuana use did not appear to cause any other harms to the teenage brain, his team found. "Teenagers...