Forget the internet. The largest network on the planet is a web of fungal threads — the mycelium — growing beneath every field and forest. Scientists just mapped it for the first time in Science, and the scale is almost a joke: 110 quadrillion kilometers of living filaments, nearly a billion times the distance from Earth to the Sun.
franceinfo called it exactly what it is: an autoroute. One that delivers water, carbon and nutrients to 70% of the world's plants — and buries roughly 4 billion tonnes of CO₂ every year.
But here's the thing about highways.
A map shows you the roads. It can't tell you if anything's actually driving on them.
And that's the part that matters. A busy fungal network means living, breathing, healthy soil. An empty one is a ghost town — plants going hungry, carbon leaking back out, ground quietly dying. (The bad news? In intensively farmed soil, half the network is already gone.)
So the real question was never where the network is. It's whether it's moving — and whether we're doing anything to protect it. Because this highway won't rebuild itself. Once the traffic stops, it doesn't just come back.
The first step to protecting something is being able to see it work.
That's what Mycolink was built to hear. Our acquisition systems tap straight into the network's electrical signals and turn them into a live traffic report for your soil: thriving, or flatlining. No guesswork. No digging. Just the underground, finally speaking up.
The map showed us the roads.
Inspired by franceinfo's "le billet science" (Bill François). Study: "Global density and biomass of arbuscular mycorrhizal fungal networks," Science (2026).