I think it's clear that the planet is in peril, Dirprwy Lywydd, and the overwhelming opinion of science and scientists on these matters makes that clear. That's why the IPCC have said that climate change is happening earlier and more rapidly than expected and that we have 12 years left to halt this dangerous climate change and that Governments must take immediate, radical steps to prevent it. In that sort of context, I'm very pleased that Welsh Government has requested that the climate change committee reviews emissions in Wales to make sure that we're playing our part in limiting global temperature rises to 1.5 degrees, because the urgency of the situation demands that.

So, there is much that we can do as a Government, Dirprwy Lywydd, and that we can do as individuals and that organisations can do, and it's a challenge to all of us, isn't it? It isn't just a challenge to Welsh Government, it's a challenge to all Assembly Members, political parties and independents here today. For example, if we looked at agricultural support post Brexit, there are some difficult issues for political parties. We know that there's a need, in terms of land management and agricultural support, to put the environment at the forefront to a much greater extent than has happened hitherto, as we move forward, and that will create difficulties for political parties, I think, in terms of the lobbying that they receive and some of the constituencies that they represent. So, there will be a need for brave decisions as far as those matters are concerned.

Obviously, there are difficult decisions for Welsh Government, and one that I'd like to highlight, which has already been highlighted here today, is transport, because transport is a very significant part of the overall picture. We know that it's perfectly possible to have a much more integrated transport system than we have here in Wales because many other countries have managed that. Obviously, we won't get there overnight, but with the metro, for example, that's one example of how we can make important and significant progress, and hopefully do that within that 12-year timespan that the IPCC flag up. So, we could put more resource into the metro than is currently planned, and we could build it more quickly if, for example, we made a decision to put the resource that's currently earmarked for the M4 relief road into the metro system instead. I would very much support that. We saw the report by the commissioner for future generations making some extremely important points. We await the inquiry report, but we will have difficult decisions to make—all of us and Welsh Government—quite quickly on that very important matter. I think that will demonstrate how serious we are about taking bold, radical and effective steps to deal with the challenges of climate change. 

I would like to see active travel prioritised to a greater extent as a very important part of the cultural shift that we need to make around transport to get people walking and cycling more. I would like to see us make 20 mph the default speed limit right across Wales, with the ability for local authorities, then, to take forward traffic orders for 30 mph on those inner urban roads as an exception rather than the rule. That lends itself to more cycling and walking in those areas and would, again, be a part of that approach to integrated transport, and part of the cultural change that we need.

Also, Dirprwy Lywydd, I'd like to agree that I think Cardiff, as our capital city, has a responsibility to set a really good example, as cities are doing elsewhere. I think Cardiff is on that journey. It has many more 20 mph areas now. It has a lot more cycling, and, indeed, walking. It has the bike scheme, and I know it is considering radical steps when it comes to reducing the number of vehicle journeys on the roads in Cardiff, and I hope very much that we'll see those radical steps in place before long. So, it's perfectly possible to meet these challenges, Dirprwy Lywydd, but it is a major challenge to Welsh Government, to all of us, to our local authorities, to our capital city, to every organisation and individual in our country.