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Science correspondent Allan Blackman takes this Guy Fawkes opportunity to talk about the chemistry behind fireworks? What makes them go bang and where do the colours come from? Could sharper knives be the secret to stopping onion tears in the kitchen? And America's Health Secretary RFK wants to put saturated fat back on the menu, but what does science have to say about that? Allan Blackman is a Professor of Chemistry, School of Science, Auckland University of Technology.
