...the text on page 87 is embarrassing to read.
This book is well written, informative, and the result of Ben Gadd's tireless exploration. I downloaded the GPS waypoint list from his website and used it while traversing the Icefields Parkway. It is a clever and useful way to take the reader to the rocks and formations. His efforts deserve great praise.
Now, the embarrassing - and if not embarrassing, then silly - text. Gadd has bought into the nature-good-man-bad worldview that leads to all sorts of conclusions that are simply untrue. Take his insistence on the ludicrous pronouncement that 140,000 (yes, 140,000) species go extinct every year. He cites as proof to that claim the name of E.O. Wilson and a United Nations report. Ye' gods. Enough said, except that he wrote to me pointing out that the current global warming trend (which trend is controversial) is out of phase with solar insolation (i.e., Milankovitch style) forcing and therefore must be anthropogenic. However, he fails to point out that the Younger Dryas glacial advance he briefly mentions too is out of phase with orbital forcing. Sorry Ben, but you can't have it both ways; namely, using temperature records to argue anthropogenic inputs causes warming because it is out of phase with orbital forcing and then simply dismiss the sometimes lack of correlation between the Quaternary climate record and orbital forcing. Sadly, that appears not to matter to him. Nay, all that matters is the seriousness of the charge.