California’s Tallest and Most Iconic Trees Are Getting Heatstroke

These elevated ecosystems are home to creatures like the wandering salamander, which can spend its entire life cycle on top of a single tree, and the marbled murrelet, a seabird whose nesting habits were a mystery until one day in 1974, when a tree-trimmer stumbled upon a nest 150 feet above the ground. Sometimes a stray seed—a sitka spruce or oak or even another redwood—finds its way up a massive redwood and grows into another tree entirely, nestled among the…