Amazon comIn No Turning Back, Richard Ellis makes a survey of animals that have disappeared through anthropogenic or other means "Everybody knows what extinction is," he writes, but theories of why it happens are hampered by "the inability of biologists and paleontologists to agree on exactly what a species is " Still, Ellis ождэф manages to pick perfect examples to show how extinctions happen in the natural world, and how humans unnecessarily contribute to some of them It's hard to look at the careful illustrations of long-gone animals such as the Irish elk, Steller's sea cow, quagga, or even the dodo, without feeling that the world would be better with some of them around Ellis also introduces little-known species currently close to extinction, such as the spot-tailed quoll, the bilby, and the saiga, to add to the list of well-known threatened animals such as the white rhinocerous or the orangutan Ending on an optimistic note, Ellis tells how some animals have been brought back from the brink of extinction through hard work, careful conservation, and lots of money A master of the shocking ecological fact, and a thoroughly accessible and engaging narrator of the natural world, Ellis has succeeded in explaining extinction and its causes by showing readers what there was to love about creatures long gone --Therese LittletonBook DescriptionA noted naturalist's fascinating inquiry into the life and death of animal species Just about every species that has ever lived on earth is extinct The trilobites, which dominated the ocean floors for 300 million years, are gone The last of the dinosaurs was wiped out by a Mount Everest-sized meteorite that slammed into the earth 65 million years ago The great flying reptiles are gone, and so are the marine reptiles, some of them larger than a humpback whale Before humans crossed the Bering land bridge some 15,000 years ago, North America was populated by mastodons, mammoths, saber-toothed tigers, and cave bears They too are MIA Passenger pigeons once flew over North America in flocks that numbered in the billions; the last one died in 1914 In this book you will meet creatures that were driven to extinction even more recently, as well as some that were brought back from the brink You will even encounter animals not known to exist until recently -- an antidote to extinction.  Grillet2004 г 448 стр ISBN 0060558032.