THE POWER OF NATURE – Alaska is nature’s wildest frontier. Humpback whales glide through the water, and glaciers advance and retreat as the seasons turn. Venture north from Vancouver for the chance to see salmon spawning in babbling rivers and watch eagles wheeling across the wide-open sky. For a different perspective, embark across the sprawling glaciers in a dog sled, or see the fjords and ice fields from above on an exhilarating seaplane ride.