With just a few weeks remaining in the session, Colorado lawmakers are hoping to wind down what's been a lengthy and contentious debate over how to regulate the booming medical marijuana industry. Yesterday the public got what could be one of the last chances to weigh in on House Bill 1284. It would require dispensary owners to pay hefty licensing fees, undergo criminal background checks and grow most of the pot they sell. That could lead to the closure of many dispensaries, and medical marijuana patients worry that will make it harder to get the drugs they need. Statehouse reporter Bente Birkeland and KUNC's Kirk Siegler have more.