San Francisco to wipe out old pot convictions

San Francisco will retroactively apply California's new marijuana legalization laws to prior convictions, expunging or reducing misdemeanors and felonies dating to 1975.

Western states try to tame homegrown marijuana

In some states, looser rules governing homegrown medical pot are now considered at odds with highly regulated commercial markets for medicinal and recreational products.

What marijuana legalization did to car accident rates

A a pair of studies came to seemingly opposite conclusions on whether rising marijuana use is causing an increase in car crashes in states that have legalized the drug.

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