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Michael Cunliffe is a microbiologist in the Department of Biological Sciences at the University of Warwick in England. He studies the microbes that live in the thin layer of water at the very surface of the ocean. His research is shedding light on an ecosystem that\'s both mysterious and huge, spanning three-quarters of the surface of the planet.

In this interview, I talked with Cunliffe about the discovery of this sea-surface ecosystem, and the influence it has over the Earth\'s climate.