Politico Media: CNN plans to launch a Vice News-style digital video series called “Great Big Story” within the next few weeks. Carlos Martinelli, who most recently worked as a senior video editor at Time Inc., will serve as a senior producer on “Great Big Story,” according to his Linkedin profile. CNN plans to promote the new series with an edgy ad campaign targeted at millennials. The TV and online ads mock the kind of substance-free posts often published online.