Australian author and presenter Dr Karl Kruszelnicki gives a whirlwind tour of incredible science facts and questions. Like who put a nuclear reactor in africa 2 billion years ago? And is there life on a moon of Saturn? Dr Karl Kruszelnicki is an Australian science populariser with degrees in Physics and Maths, Biomedical Engineering, Medicine and Surgery. He has held a wide range of jobs, from doctor to film-maker, radio personality to labourer, car mechanic to physicist.