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Little Green Lies, a short review

Jeff Bennett has written a book that gives the appearance of being a scholarly work on what could be seen by some as over-reactions to perceived global environmental threats, but it is not all that it appears.

Written 2012/12/27
Contact: email daveclarkecb@yahoo.com
 
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I was given a copy of Jeff Bennett's Little Green Lies for Christmas, 2012.

The back cover tells us that Mr Bennett is Professor of Environmental Management in the Crawford School of Economics and Government at the Australian National University. Mr Bennett considers his subject from an economic and human-centred, rather than from an environmental, perspective. Early hints of climate change denial become more than that in chapter nine on climate change. Much of Bennett's general point of view is explained by his economically based point of view and his denial of the reality and urgency of climate change. (The index has 35 references under 'price', not a single one on ocean acidification.)

His book is aimed at exposing what he calls the 'little green lies' around the questions about the long-term sustainability of the planet. He looks from the point of view of not 'what is best for the long-term preservation of a healthy biosphere?', but rather 'how can the environment be handled so that humanity can get the most out of it?'

Bennett does not once mention the problem of ocean acidification, perhaps because it has not come to the notice of economists yet. The increasing acidity of the world's oceans, due directly to increasing levels of dissolved carbon dioxide, is closely connected with climate change yet not a part of climate change. The increasing levels of carbon dioxide in the atmosphere lead to increasing levels of carbonic acid in the oceans. The higher acidity levels are a threat to any marine creature that makes a shell or skeleton out of calcium carbonate (which is soluble in acidic conditions).

The first chapter, on peak oil, was well written and in general quite true, although it down-plays the environmental costs of burning fossil fuels and it should have discussed the declining energy return on investment (EROI) in the petroleum industry.

The second chapter, on renewable energy, on p35 he gives figures for greenhouse gas emissions for various forms of energy generation. His reference for these figure was an article published by the International Atomic Energy Agency, for which he gave a URL. I could not find it on the Net. However, I did find an article on the IAEA's site by Daniel Weisser titled "A guide to life-cycle greenhouse gas emissions from electric supply technologies". I give both Bennett's and Weisser's figures below:

Greenhouse gas emissions for various electricity generating methods (in grams of carbon equivalent per kWh)
MethodBennettWeisser
Coal3571000
Gas188540
Solar PV7656
Wind1312

Other sources give similar greenhouse gas emissions for coal and gas to those given by Weisser; why did Bennett give such low values? Was it to try to make coal and gas look more benign than they really are?

In chapter 4, on population, Bennett (p73) mentions the 'possibility' of providing all the world's power using nuclear energy. He was apparently unaware that there is not enough uranium to do this for any significant length of time.

Perhaps Bennett's worst distortion of the truth (or should I say greatest lie?) was in chapter 9 on climate change (p167) where he claims there is no scientific consensus that climate change is largely caused by human activities. He ignores the consensus that quite definitely exists among climatologists. (James Powell searched the Web of Science and found that of 13 950 peer-reviewed climate articles published between 1991 and 2012, only 24 rejected global warming. There are at least two similar studies of the peer-reviewed climate change literature giving similar results.)

Bennett references 'retired' mining geologist and outspoken climate change denialist, Ian Plimer, and seems to believe that Plimer is more reliable as a source of climate change information than the entire body of the world's climatologists. A common error of the non-scientist is to assume that all scientists are somehow equal (eg. that Plimer, a mining geologist, is just as likely to be an expert on climate change as a climatologist). One would not expect a person in Mr Bennett's position to make this assumption, but he seems to have done so in this case. Peer-reviewed publication in respected journals relevant to the subject of the paper is very important. Ian Plimer's work on climate change is not peer-reviewed and has been heavily criticised by climate scientists.

A better review of Little Green Lies than mine was written by Chis Nobbs and is available from the Green Institute's Net site.

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