One reason the trees never get very big or very old is because, in spite of all that water, they burn down on a regular basis. They’re designed to. In this way, the circumboreal is truly a phoenix among ecosystems: literally reborn in fire, it must incinerate in order to regenerate, and it does so, in its random patchwork fashion, every fifty to a hundred years. This colossal biome stores as much, if not more, carbon than all tropical forests combined and, when it burns, it goes off like a carbon bomb.
