The Sixth Extinction by Elizabeth Kolbert
New York : Henry Holt and Co., 2014.
319 p. : ill. ; 25 cm.

Let's face it; mass extinction is a depressing topic, but Kolbert manages to make it interesting, humane and compelling.  She does this by not only presenting a general outlines of what the 6th extinction is, and where it fits in the history of science - but also by presenting it in understandable case studies and examples from the past and present.  Also, when she focuses on current extinction events - e.g. Panamanian golden frogs, Sumatran Rhinos, and coral reefs - she travels to the place where this event is happening and joins in with researchers and scientists.  The results are moving and interesting vignettes that help any curious person understand both the specific and fascinating events of mass extinction, but also get a taste of the terrible potentials that they hold for the future of the planet and our species.

I'm pleased that this book won a 2015 Pulitzer Prize - it is well deserved and will bring new readers to this critical topic.   I would also recommend this book to any young adult reader interested in the topic or interested in good science writing in general.

Goodbye Cruel World

from Scotese.com - an awesome source of paleomaps from earth history

The Great Extinctions by Norman MacLeod
Buffalo, N.Y. : Firefly Books, 2013
208 p. : ill. (chiefly col.), col. maps ; 26 cm.

Confession: I love books about deep time, especially about the earth.  This is a book that satisfied my hankering for science books about the very, very distant past.  And regarding the deep past, what could be more interesting than those rare great extinctions in which enough conditions - sea levels, climate, extraterrestrial impact, volcanism - occurred together that a dramatic percentage of all life on earth was wiped out?  The topic is even more compelling when one thinks about the possibility that we are living at the start of the 6th great extinction event.  However, I'd have to give this book a mixed - though mostly positive - review.

The strengths of this book are it's organization - each great extinction event is presented chronologically and maps, charts, and knowns and unknowns about the event are presented in much the same order.  I also really appreciated the number of illustations and maps in the book.  The author is able to cover a lot of territory in the book and make a lot of it accessible.  A lot, but not all of it - and that is my main critique of this book for a high school collection.  There are times where the data and explanations are very complex and difficult to follow and will turn off and frustrate the general reader.  Therefore I would recommend this book to students researching the science of the great extinctions or students who are avid science readers; the general reader is probably going to get bogged down long before finishing this book.