A young cannabis plant at grows at The Joint Cooperative in Seattle, Washington Jan. 27. Cliff DesPeaux/Reuters/Landov hide caption

itoggle caption Cliff DesPeaux/Reuters/Landov

Maine voters overturned a gay marriage law through a citizens' veto in 2009. Maine voted again on the issue today, thanks to an initiative put on the ballot by voter petition. Above, gay marriage supporters gather at a rally outside of City Hall in Portland on Sept. 10. Joel Page/AP hide caption

itoggle caption Joel Page/AP

Brian Lawson rolls a marijuana cigarette at the BC Marijuana Party Headquarters in Vancouver, British Columbia. Vancouver is in the marijuana-friendly corner of Canada. Jae C. Hong/AP hide caption

itoggle caption Jae C. Hong/AP

Despite the "not for consumption warning," the DEA has banned the sale of products like K2, which contain herbs and spices sprayed with a synthetic compound chemically similar to THC, the psychoactive ingredient in marijuana. Kelley McCall/AP hide caption

itoggle caption Kelley McCall/AP