Listen to Angus talking with comedian Fred MacAulay on BBC Radio Scotland about planting trees and all things green.  The topic under discussion was offsetting your holidays and how to be greener generally.

Angus comes on about 18 and a half minutes into the show.

http://www.bbc.co.uk/iplayer/episode/b0152b5l/MacAulay_and_Co_28_09_2011/