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By Catherine Abbott

Catherine AbbottFour hundred and twenty:

But today, people often think of 420 in a different light. The term “four-twenty” was originally coined in the early 1970s by a group of California high schoolers who would meet at 4:20 pm to search for an abandoned marijuana crop. Today, four U.S. states and a handful of cities/jurisdictions have legalized the use of medical and recreational marijuana. Only 11 U.S. states fully outlaw marijuana use.


Want to learn more about marijuana? Read the pharmsci angle in these AAPS Blog posts:

Catherine Abbott is the AAPS publications manager. She has a master’s in publishing from the George Washington University and a bachelor’s in English from the University of Tennessee.