The 'Wood Wide Web'

Fungal threads can stretch from one tree's roots to another's, linking plants together.

These links are sometimes called the 'wood wide web'.

In a well-known 1997 study, Canadian scientist Suzanne Simard and her colleagues found evidence that carbon could move between birch and fir trees through these fungal connections.

The idea captured the public's imagination and inspired books and documentaries.

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