A teaspoon of healthy soil can contain up to 10 meters of fungal networks—and scientists have now created the first global map of this vast underground “wood wide web.” These microscopic mycorrhizal fungi connect the roots of nearly 70% of the world’s plants, helping transport water and nutrients, store carbon, and support healthy ecosystems. The newly mapped network is estimated to span an astonishing 110 quadrillion kilometers, highlighting the hidden infrastructure that helps regulate life on Earth.
Curious about what’s beneath your feet? Explore the interactive global fungal map and discover the underground networks in your neck of the woods. You can also revisit our recent Featured Creature on mycorrhizal fungi.
Posted: July 17, 2026