Years ago, we all talked about recycling and not dumping things down your drain and all of that, but talking doesn't help much. Basically, it's going to have to be legislation because the impact is so huge and diversified.
It is only imperfection that complains of what is imperfect. The more perfect we are the more gentle and quiet we become towards the defects of others.
It was lovely to do The Knock because I haven't done anything really significant since Doctor Who.