The Alexander Archipelago, a 300-mile-long sweep of islands off the southeastern coast of Alaska, is known for its isolation, its heavy rain, and its thick, ancient forests of hemlock, pine, spruce and yellow-cedar. Yellow-cedar, which John Muir called a “truly noble tree,” has long been prized for its fine-grained, butter-colored wood. But over the past century, as average temperatures have risen, […]