It's Not Easy Being Green

No, this isn't some whining post about how wonderful I am and how hard it is to be virtuous, but a plug for BBC2's excellent show of the same name, which goes out on Thursdays at 8.30pm (see here). Last night saw them revisit the idea of keeping a greenhouse warm using a heatsink that pulls in warm air during the day and stores it, releasing it slowly during the night to keep your greenhouse warm. One day I'm going to attempt it - I guess all I need now is a greenhouse...