How do trees communicate?
Media playback is unsupported on your device

How trees use the Wood Wide Web.

13 September 2016 Last updated at 17:50 BST

Forester Peter Wohlleben thinks trees talk to each other through their roots and fungal networks.

In his new book The Hidden Life of Trees, he explains that trees can register pain, learn things, and even protect and care for each other.

Related Topics