Greedy Lying Bastards, a film about climate change, opens this Friday (look for my review in tomorrow's paper); it takes a confrontational approach to the subject. But here's the thing: you can argue with a politician or a lobbyist, but a melting iceberg will simply respond with a cold, cold stare.

Tonight and tomorrow at the Castro, check out 2012's similarly-themed but far more meditative Chasing Ice. You may have caught a glimpse of its striking glaciar photography on the Oscar telecast, since that song I didn't like in my review (below) was one of the unlucky tunes shoved into a quick "Here's Best Song nominees that weren't sung by Adele, Hugh Jackman, or Norah Jones, therefore they don't matter" montage. (Needless to say, it didn't win, but it did expose this powerful film to the billion watching, so there's that.)

Chasing Ice Even wild-eyed neocons might reconsider their declarations that global warming is a hoax after seeing the work of photographer James Balog, whose images of shrinking glaciers offer startling proof that our planet is indeed being ravaged by climate change (and it's getting exponentially worse). Jeff Orlowski's doc follows Balog and his Extreme Ice Survey team as they brave cruel elements in Iceland, Greenland, and Alaska, using time-lapse cameras to record glacier activity, some of it quite dramatic, over months and years. Balog is an affable subject, doggedly pursuing his work even after multiple knee surgeries make him a less-than-agile hiker, but it's the photographs — as hauntingly beautiful as they are alarming — that make Chasing Ice so powerful. Could've done without Scarlett Johansson crooning over the end credits, though. (1:15) Castro. (Cheryl Eddy)