In case you are like me and only clicked the article to find out what the other 10 states were. Here's what Wikipedia says:
> The recreational use of cannabis is legalized in 11 states (Alaska, California, Colorado, Illinois, Maine, Massachusetts, Michigan, Nevada, Oregon, Vermont, and Washington), the District of Columbia, the Northern Mariana Islands, and Guam.
> The recreational use of cannabis is legalized in 11 states (Alaska, California, Colorado, Illinois, Maine, Massachusetts, Michigan, Nevada, Oregon, Vermont, and Washington), the District of Columbia, the Northern Mariana Islands, and Guam.