The Quiet Intelligence of Forests

Beneath a healthy forest floor lies a network most visitors never think about: a web of fungal threads connecting the roots of trees that may be species apart, sharing carbon, water and warning signals.

Researchers have taken to calling it the 'wood wide web' — half in jest, half because there's no better shorthand for a system this interconnected. A birch under insect attack can send a chemical signal through this network that primes a neighboring fir to raise its own defenses, days before the insects arrive.

It's a useful corrective to how we usually picture a forest: not as a collection of individual trees competing for light, but as something closer to a single, slow-thinking organism.