Writers' Trust Non-Fiction Prize Finalist

John and Mary ThebergePtarmigan's DilemmaJohn Theberge and
Mary Theberge
The Ptarmigan’s Dilemma:
An Exploration into How Life Organizes and Supports Itsel
McClelland & Stewart


About the Book

The Ptarmigan’s Dilemma is a ground-breaking explanation of evolution for non-scientists. Drawing on breakthrough research and their extensive field and lab work, wildlife biologists John and Mary Theberge examine the mechanism of natural selection and dramatic evolutionary change. By marrying the separate sciences of ecology and genetics, the Theberges paint a picture far richer than either discipline can alone of how, for almost four billion years, life on Earth has evolved to encompass the rich diversity that is under threat today.

About the Author

John Theberge and Mary Theberge have spent more than 30 years conducting field research in the Yukon, Labrador, and British Columbia, and especially in Algonquin Park, Ontario. They have collaborated on several books and scientific and popular articles, and were jointly awarded the 1994 Equinox Citation for Environmental Achievement. They live in Oliver, British Columbia.




Woodcock Fund



Shaughnessy Cohen Prize for Political Writing


September 19 for books published between June 20 and September 18, 2018


Hilary Weston Writers' Trust Prize for Nonfiction
and Rogers Writers' Trust Fiction Prize


July 18 for books published between May 16 and Sept 30, 2018


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