The row over trees cut down for HS2 is trivial next to a far bigger crisis of deforestation that’s damaging Britain’s agriculture, destabilising our environment and making us vulnerable to extreme weather, says Phil Sturgeon, trustee of climate charity Protect Earth. He tells Ros Taylor about why it’s in our urgent self-interest to plant more trees, why deforestation literally means colder cows and less efficient farming… and why our fears around HS2 are wildly misplaced.

Presented by Ros Taylor. Produced by Andrew Harrison. Assistant producers: Jacob Archbold and Jelena Sofronijevic. Music by Kenny Dickinson. Audio production by Alex Rees. THE BUNKER is a Podmasters Production

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