California’s Tallest and Most Iconic Trees Are Getting Heatstroke

This story originally appeared on Vox and is part of the Climate Desk collaboration.

A grove of coast redwood trees is a forest of forests. Individual trees can live for thousands of years, and as they grow, their canopies develop mats of soils and ferns, creating something like a second forest floor hundreds of feet above the ground.

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 branches of a giant.

For millennia, redwoods have been the anchors...

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