CNN: US scientists awarded Nobel in medicine for body clock insights

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David Ray, a professor of medicine and endocrinology at the University of Manchester, said the implications of the research were "far-reaching," and paid tribute to the winners."These investigators were the first to discover a gene that controlled circadian behavior," Ray said. "It had been recognized for some time that animals and plants not only respond to changes in light as we move from day to night with the Earth's rotation, but that they anticipate such changes."