2010 Science Festival special

The Diffusion Science Week special, coming to you from the Ultimo Science Festival. We tackle the questions you have asked us over the last few weeks. Why do I sneeze at the Sun? What would something look like if it was travelling at the speed of light? Why do sportsmen train at altitude? Why do previously overweight people have trouble keeping the weight off? We ask the experts to get the real answers to these questions and more! Questions answered by Victoria Bond and Ian Woolf Produced and hosted by Marc West