Life: A Natural History of the First Four Billion Years of Life on Earth

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Life: A Natural History of the First Four Billion Years of Life on Earth
Life, An Unauthorized Biography.jpg
Cover of the first edition
Author Richard Fortey
Original title Life: An Unauthorised Biography
Illustrator Cassandra J. Pappas (design)
Jerry Bauer (photos)
Country United States
Language English
Subject Natural history
Published 1997 (HarperCollins)
Media type Print (Hardcover and Paperback)
Pages 346 pp (paperback edition)
ISBN 0-375-40119-9
OCLC 38002657
576.8 21
LC Class QH366.2 .F69 1998

Life: A Natural History of the First Four Billion Years of Life on Earth is a non-fiction book written by British paleontologist Richard A. Fortey. It was originally published in hardcover in Great Britain by HarperCollins Publishers, under the title Life: An Unauthorised Biography. Fortey used this book to explain how life has evolved over the last four billion years. He discusses evolution, biology, the origin of life, and paleontology. Under its various titles Fortey's book has become a best-seller; according to WorldCat, it is in over a thousand public libraries in the United States alone.