By Mark Maslin, Professor of Earth System Science, UCL
The fossil fuel industry, political lobbyists, media moguls and individuals have spent the past 30 years sowing doubt about the reality of climate change – where none exists. The latest estimate is that the world’s five largest publicly-owned oil and gas companies spend about US$200 million a year on lobbying to control, delay or block binding climate policy.
Their hold on the public seems to be waning. Two recent polls suggested over 75% of Americans think humans are causing climate change. School climate strikes, Extinction Rebellion protests, national governments declaring a climate emergency, improved media coverage of climate change and an increasing number of extreme weather events have all contributed to this shift. There also seems to be a renewed optimism that we can deal with the crisis.
But this means lobbying has changed, now employing more subtle and more vicious approaches – what has been termed as “climate sadism”. It is used to mock young people going on climate protests and to ridicule Greta Thunberg, a 16-year-old young woman with Asperger’s, who is simply telling the scientific truth.
At such a crossroads, it is important to be able to identify the different types of denial. The below taxonomy will help you spot the different ways that are being used to convince you to delay action on climate change.
1. Science denial
This is the type of denial we are all familiar with: that the science of climate change is not settled. Deniers suggest climate change is just part of the natural cycle. Or that climate models are unreliable and too sensitive to carbon dioxide.
Some even suggest that CO₂ is such a small part of the atmosphere it cannot have a large heating affect. Or that climate scientists are fixing the data to show the climate is changing (a global conspiracy that would take thousands of scientists in more than a 100 countries to pull off).
All these arguments are false and there is a clear consensus among scientists about the causes of climate change. The climate models that predict global temperature rises have remained very similar over the last 30 years despite the huge increase in complexity, showing it is a robust outcome of the science.
The shift in public opinion means that undermining the science will increasingly have little or no effect. So climate change deniers are switching to new tactics. One of Britain’s leading deniers, Nigel Lawson, the former UK chancellor, now agrees that humans are causing climate change, despite having founded the sceptic Global Warming Policy Foundation in 2009.
It says it is “open-minded on the contested science of global warming, [but] is deeply concerned about the costs and other implications of many of the policies currently being advocated”. In other words, climate change is now about the cost not the science.
2. Economic denial
The idea that climate change is too expensive to fix is a more subtle form of climate denial. Economists, however, suggest we could fix climate change now by spending 1% of world GDP. Perhaps even less if the cost savings from improved human health and expansion of the global green economy are taken into account. But if we don’t act now, by 2050 it could cost over 20% of world GDP.
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