Kids who saw an ad for legal marijuana were more likely to report smoking it one year later, according to a Rand Corp. report. Tomas Rodriguez/Getty Images hide caption
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recreational marijuana
Friday
Sunday
Congress marijuana Bill Clark/CQ-Roll Call,Inc. via Getty Images hide caption
Wednesday
A man tends to marijuana plants at a 54,000-square-foot marijuana cultivation facility in Las Vegas. In Nevada's first weekend of recreational pot sales, "well over 40,000 retail transactions" were carried out, tax officials say. Ethan Miller/Getty Images hide caption
Monday
Proponents of the emerging pot-for-pleasure industry want to grab a share of the nearly $2 billion tourism business in Sonoma County with events like dinners that incorporate marijuana. Courtesy of Sonoma Cannabis Company/Kristen Jeanne hide caption
Pairing Wine And Weed: Is It A California Dream Or Nightmare?
Thursday
A demonstrator at a marijuana legalization rally in Washington, D.C., on Inauguration Day 2017. Theo Wargo/Getty Images hide caption
Saturday
Cannabis plants grow in the greenhouse at Vireo Health's medical marijuana cultivation facility on Aug. 19 in Johnstown, N.Y. Drew Angerer/Getty Images hide caption
Wednesday
A marijuana plant is displayed during the 2016 Cannabis Business Summit & Expo last month in Oakland, Calif. Justin Sullivan/Getty Images hide caption
Kurt Britz checks a driver's license at the 3-D Denver Discrete Dispensary on Jan. 1, 2014, the first day recreational marijuana sales were legal in Colorado. Possession remains illegal for those under 21 years old, and statistics show a widening racial gap in arrests for those offenses. Theo Stroomer/Getty Images hide caption
As Adults Legally Smoke Pot In Colorado, More Minority Kids Arrested For It
Monday
Wednesday
A budtender prepares an edible sale for a customer at LivWell Broadway in Denver. Craig F. Walker/Denver Post via Getty Images hide caption
Monday
Two men inspect the goods at at Farma, a marijuana dispensary in Portland, Oregon. The state's first week of retail sales brought in an estimated $11 million, a trade group says. Josh Edelson/AFP/Getty Images hide caption
Monday
Friday
Partygoers attend a Prohibition-era themed New Year's Eve party celebrating the start of retail pot sales, at a bar in Denver on Dec. 31, 2013. Brennan Linsley/AP hide caption
Awesome Tips, Dude: Denver May Allow Pot In Bars, Restaurants
Wednesday
In Oregon, people can grow up to four marijuana plants per household. Elaine Thompson/AP hide caption
Wednesday
Grand Daddy Purple, Skunk #1, Sugar Daddy Courtesy of Chronicle Books hide caption