The box office success of An Inconvenient Truth (2006) is gratifying but hardly means that the problem of global warming is even close to being addressed, much less solved. This documentary by Leonardo DiCaprio (producer, writer, on-screen narrator) and Nadia Conners and Leila Conners Petersen (writer-directors) continues the earlier movie’s campaign, and though the filmmaking isn’t everything it might have been (the opening montage is especially clumsy), their argument is compelling, absorbing, and urgent. Stephen Hawking and Mikhail Gorbachev are among the commentators, and despite the alarming facts presented, the filmmakers take pains not to foster fatalistic gloom, concentrating on some of the progressive solutions still available to us. PG, 95 min. (JR)