The second edition of this book has been completely updated. It studies
the history and gives an analysis of extreme climate change on Earth. In
order to provide a long-term perspective, the first chapter briefly
reviews some of the wild gyrations that occurred in the Earth's climate
hundreds of millions of years ago: snowball Earth and hothouse Earth.
Coming closer to modern times, the effects of continental drift,
particularly the closing of the Isthmus of Panama are believed to have
contributed to the advent of ice ages in the past three million years.
This first chapter sets the stage for a discussion of ices ages in the
geological recent past (i.e. within the last three million years, with
an emphasis on the last few hundred thousand years).