I like Rampino's book very much: it is a useful, well-written and not overly technical summary of Neocatastrophism since the Alvarez team published the initial work in the early 1980's. The book is well written and paints a lively picture of how work in the area of geoscience is actually done - aided and abetted to good purpose by copious illustrations. Niles Eldredge, author of Eternal Ephemera ascunde descrierea