“We have to account for every bit of plant, every bit of flower, every bit of waste,” said the Co-Founder of CommCan, a ...

while marijuana photographer Chris Romaine won third place for his image of a cannabis plant leaf. You can see all 20 winning images below.

The term medical marijuana, or medical cannabis, refers to the use of dried flowers and leaves from the hemp plant Cannabis sativa ... as well as heart and kidney disease. However, the effects ...