Featured image: 7,000-year-old skeleton of woman may have been a victim of leukemia, making it the oldest case found.
Story highlights. Colorado began allowing the sale of recreational marijuana on January 1 to anyone age 21 or older. Residents can now buy marijuana like alcohol -- except the cannabis purchase is limited to an ounce, which is substantial enough to cost about $200 or more.
It was the first state to legalize the substance and after almost 2 years, here are some facts about the Colorado economy since marijuana legalization: 1  Coloradoâs economy is booming since legalization. 2  Colorado collected $53 million in taxes during the first year after legalization.