[PDF KINDLE] Under a Green Sky Global Warming the Mass Extinctions of the Past and What They Can Tell Us About Our Future By Peter D. Ward

Summary ç PDF, DOC, TXT or eBook ´ Peter D. Ward

Free read ☆ Under a Green Sky Global Warming the Mass Extinctions of the Past and What They Can Tell Us About Our Future ¹ PDF, DOC, TXT or eBook Peter D. Ward ´ 0 Read & download Summary ç PDF, DOC, TXT or eBook ´ Peter D. Ward By looking backward at the course of great extinctions a paleontologist sees what the future holdsMore than 200 million years ago a cataclysmic event known as the Permian extinction destroyed than 90 percent of all species and nearly 97 percent of all living things Its origins have long been a puzzle for paleontologists During the 1990s and the early part of this century a great battle was fought between those who thought that death had come from above and those who thought something complicated was at workPale. Fantastic book by great paleontologist and mass extinction specialist Peter Ward He beautifully describes the scientific process responsible for resolving some of the most intriguing of extinctions The End Permian also known as The Great DyingIn recent years a consensus came about that the majority of mass extinctions the so called Big Five were not caused by asteroid or comet impact They were greenhouse extinctions due to a rapid increase in atmospheric carbon dioxide and the extreme climatic conditions that followed The end of the book brings a cautionary tale about our own actions as a civilization We ve just passed the 400 ppm CO2 concentration threshold By the end of this century we could reach 600 800 ppm That will be disastrous not only for humans but for animals and plants as wellIt happened before and it could happen again Let us use paleontology as a tool to prevent what nature is telling us is an all too possible dark future Daniel

Free download Under a Green Sky Global Warming the Mass Extinctions of the Past and What They Can Tell Us About Our Future

Free read ☆ Under a Green Sky Global Warming the Mass Extinctions of the Past and What They Can Tell Us About Our Future ¹ PDF, DOC, TXT or eBook Peter D. Ward ´ 0 Read & download Summary ç PDF, DOC, TXT or eBook ´ Peter D. Ward The discovery of what is responsible makes for a fascinating globe spanning adventureIn Under a Green Sky Ward explains how the Permian extinction as well as four others happened and describes the freakish oceans belching poisonous gas and sky slightly green and always hazy that would have attended them Those ancient upheavals demonstrate that the threat of climate change cannot be ignored lest the world's life today ourselves included face the same dire fate that has overwhelmed our planet several times before. Hard to argue against

Free read ☆ Under a Green Sky Global Warming the Mass Extinctions of the Past and What They Can Tell Us About Our Future ¹ PDF, DOC, TXT or eBook Peter D. Ward ´ 0 Read & download Summary ç PDF, DOC, TXT or eBook ´ Peter D. Ward Ontologist Peter D Ward fresh from helping prove that an asteroid had killed the dinosaurs turned to the Permian problem and he has come to a stunning conclusion In his investigations of the fates of several groups of mollusks during that extinction and others he discovered that the near total devastation at the end of the Permian period was caused by rising levels of carbon dioxide leading to climate change But it's not the heat nor the humidity that's directly responsible for the extinctions and the story of. There s a lot of good science in this book about past extinction events and their relationship to current global warming It s an easy read but the author s style is sometimes irritating in the extreme He loves to construct these tortuous sentences that ramble through several peripheral reflections before getting to the point I suppose it s intended to show what a broad thinker he is but it mostly just makes me wish he d get to the point Nevertheless worth reading