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On today's show, NASA's announcement about training bacteria to exist on arsenic is super cool, and could lead to a great remake of "Toxic Avengers," but it's certainly not the little green men announcement we were hoping for. Plus, why the FTC's "Do Not Track" system is doomed to fail, we launch an angry Angry Birds take-down petition, and Donald "Downer" Bell buzzkills the entire show. --Molly