Paris Agreement on Climate Change

Debate between David T C Davies and James Heappey

Wednesday 7th September 2016 Commons Chamber

[David T. C. Davies]

I do not of course dismiss the possibility that the experts may be right. I have never said they are wrong; I have merely suggested that they ought to be able to answer some fairly basic questions if they expect us as policymakers to go ahead with policies that are going to be profoundly unpopular with the public and which, in many cases, the NGOs that support those policies will not support the consequences of—I will come back to that. The point the hon. Gentleman is making is that if some of this warming is natural, the amount of warming that is not natural is that much greater in terms of the percentage of CO₂ that has caused it. [Interruption.] Well, there is another issue that I am tempted to go into, but I have been asked by the Whips to keep it short and I will respect that, and that is whether or not this is a logarithmic increase. In other words—[Interruption.] Yes, I am getting looks from all around. In simple terms, if X amount of CO₂ has caused Y amount of warming, would 2X of CO₂ cause twice as much warming? People seem to have made the assumption that it would, but of course, in nature things often do not work that way.

Let me return to the Paris agreement. It talks about limiting temperature increases to about 2° of what they were in pre-industrial times. With due respect to the Minister, which pre-industrial times is that? I do not mean to look angry, but which times is he talking about? Presumably 1800 is about the base figure, but pre-industry goes on for about 4 billion years longer than that. We could quite easily go back a few years further and say 2° above temperatures in the medieval warm period, when they were around the same level as they are now. They were around the same temperature as they are now in the Roman optimum, too. I am probably going to mess this point up, but a Greek philosopher—I think he was called Thracius—was writing about date trees in Greece and how they could be made to grow but could not produce fruit, therefore intimating, through that, that temperatures were about the same then as now in Greece because date trees behave in the same way as they did 2,000 years ago. The point I am making is if we took as a pre-industrial basepoint the year 10 AD we could probably carry on merrily putting CO₂ into the atmosphere for quite a while yet before we hit 2° degrees above that period.

[James Heappey]

My hon. Friend is an oracle on these things. I do not share his analysis, but if he is right does he not still agree with me that a low-carbon future with its clean air and low cost is surely something to be embraced and sought anyway?

[David T. C. Davies]

My hon. Friend is making the assumption that carbon dioxide is some sort of pollutant. It is not. Sulphur dioxide is a pollutant, and we have done wonderful things in getting rid of that. Carbon dioxide is actually the elixir of life, and a small increase in carbon dioxide has a very beneficial effect on the ability of farmers to grow crops. So I do not accept the premise of my hon. Friend’s question, which is that CO₂ is a naturally bad thing.

I would of course accept that we should concentrate on making sure our air quality and environment are good. I have been a surfer for 20 years—or I was until I had children, anyway—and I strongly believe in the environment. I was a member of the environmental group Surfers Against Sewage for years. I am not some kind of lunatic who wants to tear the environment apart and build everywhere, but I do have concerns about policies that are going to be enormously costly and have an impact on businesses, including some in my area.

I suggest that Ministers should ask themselves whether they actually believe what the NGOs that call on them to adopt certain policies are saying. A good point was made earlier about nuclear power. I believe it is absolutely safe. It is very interesting that whenever anyone proposes a nuclear power station somewhere, some of the biggest supporters are the people who live in that area. In Anglesey, or Ynys Môn, the Wylfa site is being supported by Members of Parliament right across the political spectrum, including those of Plaid Cymru, who normally try and paint themselves, literally and figuratively, as the most green party of them all. When it comes to nuclear jobs, Plaid Cymru is very enthusiastic about nuclear power and I commend it for that. It is right to be so. Let us contrast that with what happens when people want to put up wind farms. I know of Liberal Democrat politicians in Wales who will bang the drum for wind farms at every opportunity until someone suggests that one should be constructed in their own constituency, at which point they come up with all sorts of reasons why that should not happen.

One of my concerns is that green groups—and perhaps the hon. Member for Brent North (Barry Gardiner)—say that global warming is the greatest threat to mankind but then oppose proposals for a nuclear power station, which could resolve some of our energy problems without creating any extra carbon dioxide. The same attitude has been shown repeatedly by green groups towards the Severn tidal barrage. I do not know whether that project would stack up economically, but from an environmental point of view it has the capacity to produce about 5% of the UK’s electricity without creating carbon dioxide emissions.