Supervolcano

Supervolcano pdf epub mobi txt 電子書 下載2025

出版者:Career Pr Inc
作者:Savino, John/ Jones, Marie D.
出品人:
頁數:288
译者:
出版時間:2007-8
價格:$ 20.33
裝幀:Pap
isbn號碼:9781564149534
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Approximately 75,000 years ago, an event occurred that almost wiped out human life. According to a stunning new theory, this singular event may also have completely altered the genetic evolution of humankind. It was an event that released 3,000 times the energy of Mr. St. Helens. The new book, Supervolcano, explores this eruption of the Toba supervolcano in Sumatra, Indonesia, its far-reaching impact, and the strong possibility of another supervolcano eruption in our lifetime. Supervolcanoes are considered one of the five biggest threats to humankind, along with asteroids, nuclear war, disease, and global warming. But of those, supervolcanoes are the only threat that cannot be prevented. And their effects are catastrophic. So devastating was the Toba eruption and the sheer amount of ash it released into the atmosphere, it altered the global climate for years, creating a mini Ice Age that obliterated massive amounts of plant, animal, and human life. A new theory claims this earth-shattering event also caused a severe "population bottleneck" in humans, leading to the eventual extinction of all other branches of our species with the exception of one...the branch that survived Toba and became modern humans.

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