WHEN YOU ARE TWENTY, YOU GO INTO THE DESERT TO FIND YOURSELF.   When you are seventy, you go to see what's coming. Earthwalking is the story of our connections to the natural world as witnessed over a lifetime, and a look at what we face ahead. Part memoire, part adventure travel, and part climate-naturalist journal, Earthwalking is both a requiem for our beautiful web of life and the hope we need moving forward. "A glimpse into an extraordinary life and a stunning tender nuanced appreciation of nature," says one reviewer. In the author's words, "Nature is more complex than we imagine. We know some things. But while we try, we don't understand everything. We exist at a unique junction between insufficient knowledge and wonder. We are simply part of the forest."