How Green Is Your Supermarket?

Why are Britain's supermarkets making such an effort to promote themselves as "green"? We hear the results of a study into the way the big retailers and their suppliers are trying to reduce their carbon footprint. Scotland has led the way on attempts to control the sale of cheap alcohol, but the government has stepped back from one major reform. We hear some expert advice on the best and cheapest ways to keep your computer printer stocked with ink, and we speak to the homeowner who's written a song to help sell his house.
Presenter: Peter White
Producer: Jonathan Hallewell.