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Richard Lee, 46, runs a group of cannabis-related businesses in Oakland, including Oaksterdam University, which teaches trades relating to the medical cannabis industry, including cultivation, legal compliance, and "bud-tending." Here he poses inside a growing tent at the Oakland headquarters of the school, which also has branches in Los Angeles and Sebastopol, Calif.

Read the full story: How marijuana became legal

Last updated September 15 2009: 11:00 AM ET
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