Rio+20 Summit

As this debate has shown, there is considerable scepticism about the prospect of getting much change. The hon. Member for Gower (Martin Caton) said that in recent evidence sessions there has been a downbeat response about what has happened over the past 20 years. The media coverage of the build-up to Rio has revealed concern about the fact that the summit will last for only three days, rather than the 14 days of the original summit. Many people are saying in insistent tones that this must not just be a talking shop, which points to the horrible possibility that it might end up being precisely that. We must ask why we always seem to end up in such a situation when addressing these issues. We feel very optimistic and set great targets, but a few years down the line we find ourselves wringing our hands and asking why nothing has happened. I am a great believer in the UN and I think it is fantastic that we can pull countries together to discuss common challenges, but we must also be honest with ourselves about some of the UN's limitations. It can bring people together to agree goals and targets, but it cannot take final decisions on policy or implement policies in individual countries. My hon. Friend the Member for Beverley and Holderness (Mr Stuart) talked about the idea of holding a summit of global legislators. I support that, and wish him the best of luck in making it work. There is something more fundamental that we need to try to do alongside that, however: we must lead by example. We must come up with good ideas, implement them and demonstrate that they can work so that they become, as it were, contagious and spread around the world and other Governments adopt them, too.