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Title: Sheer nonsense
Review: This book stinks. The only real solid evidence is the K-T iridium boundary, which might imply a "world-destroying" comet or asteroid, but that's all. Other than that it's a book for 5-year-old non-scientists. I found it pathetic.Alvarez's discovery is a brilliant one, which the world has now accepted, but he could have done a little better. Whether the boundary really exists is another question. Iridium is produced a lot. It might not imply a asteroid, but just volcanos going off on a world-wide scale.Bottom line: Don't read it.
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