14:03 Alex Chalk (Cheltenham) (Con)

This Bill would create a legal obligation, the first in any G20 country, for the UK to reach net zero carbon emissions by 2050. Let me be clear: the Bill is radical, and necessarily and unapologetically so. The circumstances of climate change are so serious that nothing less will do. Importantly, however, its central target is achievable.

Climate change is not some future, theoretical possibility; it is a present, practical reality. The five warmest years in recorded history have been since 2010. Here in the UK, Easter Monday was the hottest on record. In January, Australia experienced its warmest month ever, causing power outages after fuses overheated. Glaciers are retreating almost everywhere in the world, from the Alps to the Himalayas. The Ross ice shelf in Antarctica, which covers an area about the size of France, is melting 10 times faster than expected, according to Cambridge University scientists. Last year, wildfires broke out as far north as the Arctic circle. Some Members have seen changes with their own eyes. During a debate earlier this year, the hon. Member for Manchester, Withington (Jeff Smith) spoke powerfully of going back to the great barrier reef after 25 years to find magnificent corals bleached and dead.

We can choose to dismiss these events as a coincidence, ignoring the fact that they have taken place alongside soaring levels of greenhouse gases. We can choose the comforting observation that the Earth’s climate has shifted in the past, ignoring the fact that those shifts have tended to happen slowly, over hundreds of thousands of years. Alternatively, we can listen to the overwhelming majority of climate science—to all intents and purposes, a scientific consensus. The conclusions are clear: evidence of humankind’s influence on the climate is compelling and established beyond all reasonable doubt. We therefore need to act.

She did not retreat behind the convenient excuse that the UK is responsible for only a small fraction of world emissions—about 1%. That would be weak and evasive, and it is not the British way; nor, in fairness, was it the British way under a Labour Government. In 2008, the then Government introduced the Bill that became the world-leading Climate Change Act, which enshrined in law a commitment to reduce carbon emissions by 80% from 1990 levels. That Bill was passed by a huge cross-party majority, with only a handful of objections.

However, despite that strong track record, we know that we have to do so much more if we are to keep control of our climate. Although our current trajectory sets us on course for an 80% reduction in our emissions from 1990 levels by 2050, the science is now clear: if we continue to pump even that remaining 20% of greenhouse gases into the atmosphere, it is very likely that climate change will accelerate, and with it global temperatures. Indeed, if we stay on the same path, our children can expect to grow up in a world of surging sea levels, more insecure food supplies, degraded wildlife and destroyed coral reefs. We also risk the deeply alarming prospect of hitting climate tipping points—such as the melting of arctic permafrost and the subsequent release of huge stores of frozen greenhouse gases—which could cause us to lose control of our climate for good.

and making efforts to limit it to 1.5°. However, the special report from the Intergovernmental Panel on Climate Change, published in October 2018, states that if there is to be a realistic chance of meeting the 1.5° target, global carbon dioxide emissions will need to reach net zero by about 2050, with net zero for all greenhouse gases reached in future years. The report warns that there are only a dozen years in which to take action. It also states that the impact of 2° warming versus 1.5° is profound. At 2°, more than twice as much wildlife faces a major shrinkage in range. At 2°, sea levels will be 10 cm higher. At 2°, the number of people exposed to water stress would be 50% higher than it would be if we kept to 1.5°.

If we are to apply the brakes on what could easily become the runaway train of climate change, we have to reduce emissions drastically, and do so as soon as feasibly possible. Our young people realise that, as I know from speaking to them in Cheltenham and beyond. Only last week, I met Balcarras students who have set up Sustain, a Young Enterprise team promoting environmental education. Their energy and sense of mission is inspiring and uplifting.

Although this Bill was conceived before the Extinction Rebellion protests, those demonstrations were a timely reminder of the growing democratic drumbeat across the generations for the new radicalism about which I have spoken. That has been reflected in this place, too. My hon. Friend the Member for Middlesbrough South and East Cleveland (Mr Clarke) compiled a letter calling for net zero, which was signed by 191 right hon. and hon. Members.

Importantly, this Bill would create a framework for a project of national economic renewal that is credible and realistic, and one that can generate opportunities for future generations. Unrealistic targets create false hope. The Energy Transitions Commission is a coalition of business, finance and civil society leaders, chaired by the former financial regulator Lord Adair Turner, and its members are drawn from across the spectrum of energy-producing and using industries. In its impressive report, entitled “Mission Possible”, it indicates that it “strongly believes” that the objective of limiting global warming—ideally to 1.5°, and at the very least below 2°, by 2050—is achievable in developed economies, so it can be done, and I look forward to reading the conclusions from the Committee on Climate Change report on Thursday.

There is growing enthusiasm from business, too. Tesco and Unilever back the move to net zero. The National Farmers Union is advocating net zero for agriculture by 2040. Vattenfall and ArcelorMittal are building facilities to make emissions-free steel. In cement—a notoriously energy-hungry sector—experts believe that improved building design can reduce total demand by 34%. Hydrogen could potentially be used as a heat source in steel and chemicals production.

It is time for what some have referred to as “cathedral thinking”. When Sir Christopher Wren started St Paul’s, he did not have a definitive design for every last aspect, and the dome ended up being radically revised as improved building technology made a more ambitious design possible. We need to start the project, and then row in behind the target with an ambitious programme of policies on issues ranging from house building standards to transport, agriculture and planting more broad-leaved trees. In due course, the rest of the world will need this technology. Ours can be the country to develop it, perfect it and sell it. This shows the real power of net zero—not just a project of moral necessity, but one of economic renewal, too.

Of course, we cannot do this alone—that is why the UK is bidding to host the vital UN climate change conference in 2020, so that we can leverage our climate leadership—nor will this be easy, but there is the great prize of a healthy planet, teeming with life and echoing to the sounds of rich and vibrant biodiversity; the prize of a society united in a common purpose of preserving our environment and holding back climate change; and the prize of an economy at the cutting edge of scientific and manufacturing technology. Let us go for net zero.

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14:13 Christopher Chope (Conservative)

I was one of the Members of this House who voted against the 2008 Climate Change Bill on Third Reading, and I have no regrets whatsoever about having done so. Indeed, the line that those of us who voted against that Bill took has been endorsed in a very important report, issued last year to coincide with the 10th anniversary of the Climate Change Act 2008, in which it was described by Rupert Darwall as

Dieter Helm supports, as I do, the objective of cutting greenhouse gas emissions, but his overall verdict is one of the most damning to be found in any official report on any Government policy in any field. He concluded that continuing with current policy would perpetuate the crisis mentality of energy sector crises, which, he says, are likely to worsen. The report states that this is

“challenging the security of supply, undermining the transition to electric transport, and weakening the delivery of the carbon budgets. It will continue the unnecessary high costs of the British energy system, and as a result perpetuate fuel poverty, weaken industrial competitiveness, and undermine public support for decarbonisation.”

Nothing my hon. Friend said in his opening remarks spelled out the specific benefits that will accrue to people in the United Kingdom, as against elsewhere, as a result of this extraordinary act of self-indulgence, whereby we will unilaterally condemn our economy to problems that no other economy is prepared to suffer. He has not set out at all where the benefits will come from, so we have had neither the costs nor the benefits set out. That is exactly one of the problems there was with the climate change legislation in 2008.

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