Hidden beneath our feet are the fungal freeways that could rewrite Earth’s climate story. In Scotland’s Ballachuan Hazelwood, scientists from SPUN are sequencing fungal DNA to reveal the networks that let seedlings thrive and forests recover. This work stretches across the globe—from Colombia to Palmyra Atoll—mapping the Grand Cosmic Mycelial Network as a restoration blueprint. With Britain’s moist climate still ripe for temperate rainforest revival, fungi are stepping up as climate heroes, rebuilding ecosystems one spore at a time.