Science of Sci-Fi films / Mercury

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From Matt Damon's recent hit, The Martian, to Interstellar, Gravity and long-running favorite, Star Trek, Hollywood is obsessed with science fiction. But how accurate is it, in terms of the science? Dr. Graham grabs a bucket of popcorn and sits down with astrophysicist, Dr. Katie Mack and physicist, Professor Lawrence Krauss to review Hollywood's treatment of science. Even the not-so-plausible cartoon series, The Jetsons, gets an affectionate mention. Also, is the level of mercury in the fish we're eating safe for our health? While scientists team up with Mona curators to monitor the effects of mercury contamination in Tassie's picturesque Derwent River, an avid Sydney fisherman has his catch and a strand of his own hair analyzed for mercury levels with surprising results.