Marijuana officially became legal for adults in Alaska as the legalization initiative approved by voters in November took effect on February 24. As we (and state lawmakers) expected, the sky did not fall in The Last Frontier, which is now the third state in the nation to allow adult marijuana use. Under Ballot Measure 2, it is legal for 21 years of age and older to possess up to one ounce of marijuana, grow up to six marijuana plants in their homes, and possess the yield of those plants in the…