If there is some intelligent designer, then why have there been several mass extinctions in which 75% or more (in some cases, much more) of all species have gone extinct? The most famous mass extinction of all took place 65 million years ago when a celestial object crashed right off the Yucatan, wiping out the dinosaurs and most life; but an even bigger mass extinction took place 250 million years ago, the so-called Permian extinction, which eliminated 90 plus percent of all species. If there truly is an intelligent designer, how can these mass extinctions (and others) be explained? They make little sense. Why would an intelligent designer have to destroy life and start over again, many times. Wasn't the designer happy with the dinosaurs? What about that fascinating life fossilized up in the Canadian Rockies, in the Burgess Shale? Any explanations?