Under a Green Sky: Global Warming, the Mass Extinctions of the Past, and What They Can Tell Us About Our Future - ISBN:0061137928

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

Date: 14 April 2011, 23:18

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In "Under a Green Sky: Global Warming, the Mass Extinctions of the Past, and What they Can Tell Us About Our Future" Ward outlines the causes of these major extinctions. Once thought to all have occurred because of asteroid strikes, these extinctions were quite different from the Cretaceous-Paleocene event, which apparently was triggered by such a cosmic calamity. Now the three are more probably connected to naturally occurring high carbon dioxide and methane levels, leading to the melting of polar ice caps, the shutting down of the oceanic conveyor system, and the proliferation of sulfur bacteria in anoxic oceans. This is ominous, given our current rise in greenhouse gases, as the oceans then rose to cover the shore far inland in low lying areas and the atmosphere turned poisonous.
If Ward is right we are in deep trouble. He just might be wrong, but it would be folly not to pay attention! Everyone should read this book or something like it. It might change your thoughts on the subject.

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