Police in Florida are reportedly concerned about the prospect of people driving under the influence of cannabis if legalization goes ahead this November after the public vote known as Amendment 3. Meanwhile, cannabis is outpacing alcohol as Americans’ daily drug of choice, and researchers are gearing up to test a new kind of cannabis breathalyzer. Single breath tests can’t reliably test recent cannabis use, according to research by the National Institute of Standards and Technology (NIST), because its intoxicants can linger in the body for days or even weeks – long after the effects have worn …