Sadly, this magnificent tree is deteriorating, leaving researchers concerned that Pando’s days and all the forest life it supports are numbered. Human activities, including clearing and slaughtering predators that keep down herbivore numbers, eat away at this ancient being.

All the more reason to listen to ‘The Trembling Giant’ while it can still share its secrets.

This is the conclusion to every nature documentary ever. And it has been for fifty years. It never got better.