Under A Green Sky

Under A Green Sky

Global Warming, the Mass Extinctions of the Past, and What They Can Tell Us About Our Future

Book - 2007 | 1st Smithsonian Books ed.
Average Rating:
Rate this:

By looking backward at the course of great extinctions, a paleontologist sees what the future holds.

More than 200 million years ago, a cataclysmic event known as the Permian extinction destroyed more 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 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 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 the discovery of what is responsible makes for a fascinating, globe-spanning adventure.

In 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.

Publisher: New York : Smithsonian Books/Collins, 2007.
Edition: 1st Smithsonian Books ed.
ISBN: 9780061137914
Branch Call Number: 577.276 W262
Characteristics: xiv, 242 p. : ill.


From the critics

Community Activity


Add a Comment

Apr 28, 2015

The book is in part a professional history and what the author himself discovered that convinced him that major past extinctions were not primarily the result of extraterrestrial impacts (e.g., asteroids), but the result of changes in the atmosphere.
The writing is clear, but would have been helped with more diagrams and graphs.
Many of the most important points are not highlighted or had their significance communicated.

May 31, 2013

Couldn't get through this. I so wanted to read it - the subject matter seems very interesting - but the style is atrocious. About 80% of the sentences are incredibly loooong (60+ words), giving the book a breathless and confusing tone. Where's a good editor when a book needs one?!

Age Suitability

Add Age Suitability

There are no age suitabilities for this title yet.


Add a Summary

There are no summaries for this title yet.


Add Notices

There are no notices for this title yet.


Add a Quote

There are no quotes for this title yet.

Explore Further

Browse by Call Number


Subject Headings


Find it at OPL

To Top