Like Bjorn Lomborg's other writings about climate change, 'False Alarm' is a book that misleads the reader about the potential consequences of climate change and the costs of tackling greenhouse gas emissions. Lomborg accepts the undeniable evidence that climate change is driven by emissions of greenhouse gases from human activities, such as the combustion of fossil fuels and deforestation, he presents a distorted view of current knowledge by using distorted, out-of-date and cherry-picked research findings. But he is in complete denial of the scale of the risks posed by climate change impacts.
The result is a book that is more propaganda than a factual examination of the issue. It is at odds with researchers and scientific organisations around the world, such as the Intergovernmental Panel on Climate Change and the United States National Academy of Sciences, who have concluded that climate change poses an extremely serious threat to people around the world, which will continue to grow unless there is much stronger action to cut greenhouse gas emissions.
The arguments presented by Lomborg are often confused and contradictory. He claims that adapting to the impacts of climate change is easier and more cost-effective than cutting emissions, but admits that the economic damage from weather events around the world is increasing rapidly. He advocates more research on finding a magical new source of energy that does not emit greenhouse gases and is cheaper than fossil fuels, but dismisses wind and solar energy which is already producing power more cheaply than coal in many parts of the world, including the United States.
Are the heart of the book is a reliance on an out-of-date model of the economic impacts of climate change which does not reflect the latest scientific research. Lomborg also exaggerates the costs of renewables and other ways of reducing emissions, bizarrely doubling all the estimates he finds in the literature. The end result is that Lomborg suggests that there is an "optimal" level of global warming that is 3.75 Celsius degrees above pre-industrial temperature. This is a laughable conclusion. The last time global temperature was more than 2 Celsius degrees above pre-industrial temperature was about 3 million years ago during the Pliocene Epoch, when the polar ice caps were much smaller than today and global sea levels were 10-20 metres higher. Modern humans first appeared on earth less than 250,000 years ago so have no evolutionary experience of the climate that Lomborg suggests is optimal!
The book may seem superficially plausible because of the citation of academic references. But when you check the papers to which Lomborg refers, you often find that they do not state what he claims. When I contacted some of the researchers about Lomborg's characterisation of their work, they said that their findings had been misrepresented.
Overall, this book will appeal to those who, like Lomborg, arrogantly believe that they know better than the experts and think that the risks of climate change have been exaggerated. But the informed reader will be able to spot that this book is an exercise in motivated reasoning and is not a serious or credible examination of the issue.