SKU: 25176326825

Extinction: How Life on Earth Nearly Ended 250 Million Years Ago - Updated Edition

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Extinction: How Life on Earth Nearly Ended 250 Million Years Ago - Updated EditionSome 250 million years ago, the earth suffered the greatest biological crisis in its history. Around 95 percent of all living species died out a global catastrophe far greater than the dinosaurs' demise 185 million years later. How this happened remains a mystery. But there are many competing theories. Some blame huge volcanic eruptions that covered an area as large as the continental United States; others argue for sudden changes in ocean levels and

Some 250 million years ago, the earth suffered the greatest biological crisis in its history. Around 95 percent of all living species died out--a global catastrophe far greater than the dinosaurs' demise 185 million years later. How this happened remains a mystery. But there are many competing theories. Some blame huge volcanic eruptions that covered an area as large as the continental United States; others argue for sudden changes in ocean levels and chemistry, including burps of methane gas; and still others cite the impact of an extraterrestrial object, similar to what caused the dinosaurs' extinction.

Extinction is a paleontological mystery story. Here, the world's foremost authority on the subject provides a fascinating overview of the evidence for and against a whole host of hypotheses concerning this cataclysmic event that unfolded at the end of the Permian.

After setting the scene, Erwin introduces the suite of possible perpetrators and the types of evidence paleontologists seek. He then unveils the actual evidence--moving from China, where much of the best evidence is found; to a look at extinction in the oceans; to the extraordinary fossil animals of the Karoo Desert of South Africa. Erwin reviews the evidence for each of the hypotheses before presenting his own view of what happened.

Although full recovery took tens of millions of years, this most massive of mass extinctions was a powerful creative force, setting the stage for the development of the world as we know it today.

In a new preface, Douglas Erwin assesses developments in the field since the book's initial publication.-- "Choice"

Binding Type: Paperback
Publisher: Princeton University Press
Published: 03/22/2015
ISBN: 9780691165653
Pages: 320
Weight: 0.60lbs
Size: 8.50h x 5.40w x 0.80d
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SKU: 25176326825

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Nice bedding set for price
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I bought a set of these for my bedroom and guest room. They are true to color, relatively soft, fit perfect, and the comforter is pretty fluffy. The sheets didn't wrinkle and they are easy to wash and dry without doing anything special. My dog stained my guest room set and I absolutely will be ordering another one
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I’ve had the set for several months now and I really like this set. I was nervous about the comforter being thin and cheap, however, after washing and drying it is a really good comforter for the price. The sheets and pillow cases are also very smooth, no pilling or ripping, stitches are still intact, so I think it is set is great.
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Pretty comforter set
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I like how soft and comfortable this comforter set feels. It’s lightweight, so it works well for summer or if you don’t want something heavy. The color looks clean and matches my room nicely. Everything fit the bed the way it should, and the fabric feels smooth. It’s a nice set for everyday use.
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