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.
Youâre all set! Legal marijuana was a $700 million dollar industry in Colorado last year, according to a Washington Post analysis of recently-released tax data from the state's Department of Revenue. In 2014, Colorado retailers sold $386 million of medical marijuana and $313 million for purely recreational purposes.