Book excerpt: Driving Along a Highway in British Columbia, have you ever wondered why the aspen leaves were all turning silver this summer, or why trees in some places are covered with lichen while those in other areas are not, or where a certain mountain range sprang from? This authoritative and engaging guide offers a treasure trove of information about the rocks, landforms, vegetation and animal life along the major highways of British Columbia. Now updated and expanded, this edition adds the long, wild highways of northern British Columbia and the southern Yukon. With this book in your glove compartment, you'll discover a whole new dimension to taking a car trip. Book jacket.