A man known as "Professor Gizmo," smokes marijuana in a glass pipe, Wednesday, Dec. 5, 2012, just before midnight at the Space Needle in Seattle. Possession of marijuana became legal in

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A man known as "Professor Gizmo," smokes marijuana in a glass pipe, Wednesday, Dec. 5, 2012, just before midnight at the Space Needle in Seattle. Possession of marijuana became legal in Washington state at midnight, and several hundred people gathered at the Space Needle to smoke and celebrate the occasion, even though the new law does prohibit public use of marijuana. (AP Photo/Ted S. Warren) less