The District of Columbia joined Colorado, Alaska and Washington state in legalizing recreational use and possession of marijuana. Federal law still outlaws the drug, however, putting the nation’s capital at the high-profile crossroads of both state and federal laws. Gwen…

Since recreational marijuana sales began at the beginning of this year in Colorado, sales of edibles – items like pot-infused sodas, chocolates, brownies and gummy bears – have become hugely popular. Unfortunately, because of inconsistent labeling and potency, many inexperienced…