LOS ANGELES (Reuters) - The producers of a global warming documentary starring former Vice President Al Gore have landed a worldwide distribution deal with Paramount Pictures' specialty label, the Viacom Inc.-owned studio said on Tuesday. "An Inconvenient Truth," profiling Gore's campaign to raise awareness about the links between carbon emissions and climate change and making his case for what should be done about it, will open in U.S. theaters on May 26, Paramount said. The release schedule for other territories has not been decided, a studio spokeswoman said. The 95-minute film, which grew out of Gore's lecture circuit PowerPoint presentation...