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Donald Brownlee

Peter D. Ward and Donald Brownlee are the co-authors of the acclaimed and bestselling "Rare Earth," Ward is a professor of geological science and zoology at the University of Washington and the author of nine other books, including "Future Evolution," T"he Call of Distant Mammoths," and "The End of Evolution," which was a finalist for the "Los Angeles Times" Book Prize. Brownlee is a professor of astronomy at the University of Washington.