Named editor of Newsweek at only 29 (clearly, I have some catching up to do), Jon Meacham turns 40 tomorrow and things are certainly looking good. The “new” Newsweek hit news stands yesterday while Meacham grilled Treasury Sec. Timothy Geithner at the National Press Club (and on Facebook). Last month, Meacham landed a Pulitzer and he recently scored an interview with the Prez aboard Air Force One that appears in his mag’s relaunch issue. If that’s what turning ’40′ is all about, sign me up. Happy Birthday, Jon!