Marijuana sales could hit $20 billion by 2020, with help from the ever-growing vaporizer market. Vaping is an alternative to smoking that involves inhaling vapor from an electronic device.

with their Pax Era oil vaporizer device. The company sells the marijuana pods that fit into the device, so when people run out every few days or weeks, they're buying new pods from Pax again.

A boy who tried to kill a girl by stabbing her in the back with a knife after meeting to buy a cannabis vape has been made the subject of a hospital order under the Mental Health Act. Before the ...