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DR. Peter Wadhams, Emeritus Professor of Ocean Physics at Cambridge University and a world authority on polar sea ice research. We are building up a steadily growing effect on our climate, it’s really causing very, very serious problems for mankind. So, it’s an emergency. Something has to be done. And we can’t carry on living the way that we are living. DR. Wadhams, remains hopeful. He believes that we can mitigate global warming through changes in our energy use and diet. Reducing the use of animal food and increasing the use of vegetable food is a good thing for the climate.