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.
$996,184,788 â that's the final tally for Colorado marijuana sales as December 2015 figures show a record-setting finish. Licensed and regulated marijuana stores in Colorado sold $996,184,788 worth of recreational and medical cannabis in 2015, according to new data from the state Department of Revenue.