Under A Green Sky
Global Warming,the Mass Extinctions of the Past, and What They Can Tell Us About Our FutureBook - 2008
Argues that all but one of the major extinction events of the past were caused by environmental factors, examines the ways in which global warming compromises the Earth's ability to sustain life, and makes recommendations for averting future disasters.
More than 200 million years ago, a cataclysmic event known as the Permian extinction destroyed more than 90% of all species and nearly 97% of all living things. Its origins have long been a puzzle for paleontologists, and 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 more complicated was at work.
Paleontologist 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 those extinctions and others, he discovered that the near-total devastation at the end of the Permian 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 the discovery of what is responsible makes for an fascinating, globe-spanning adventure.
Arguing that all but one of the major extinction events that have occurred on the planet have been caused by environmental factors, an examination of the ways in which elevated carbon dioxide levels and global warming compromise the earth's ability to sustain life makes cautionary recommendations for averting future disasters. Reprint.