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Here at Ask A Biologist, we have some of the world's foremost experts in every field of biology. From palaeontology to neuroscience, from marine life to mammoths, they're all here. Meet the experts who answer the questions:

Photo of John Steemson
John Steemson

I'm a researcher working in a molecular biology lab at Auckland University, New Zealand. I study proteins and their chemistry in order to engineer them to do interesting things. I also have a keen interest in evolution and the philosophy of science.

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