Tuesday 6 November 2012

"Don't believe the figures" - British Geological Survey

Way back in April 2012 the Carbon Brief spoke to Nigel Smith of the British Geological Survey concerning reports in the Times and the Wall Street Journal about supposed vast UK shale gas reserves. It turned out that both papers were referring to the now infamous Reuters report claiming that the UK has 200 tcf of onshore and 1,000 tcf of offshore reserves.

Nigel Smith of the BGS told the Carbon Brief "Don't believe the figures" and "What [the reporter] has done, I think, is take Caudrilla's 200 [trillion cubic feet] and multiply it by five"

This preempts and concurs with my assessment of what has happened to the figures, i.e. that they have been cooked up either by mistake or on purpose. Having been cooked up they have then promulgated by the Global Warming Policy Foundation, newspapers, Mr Rees-Mogg MP and Wikipedia. The latter at least can be corrected.

For further information see:
http://www.carbonbrief.org/blog/2012/04/1,000-trillion-cubic-feet-of-shale-gas

Some serious questions are:
  • How did Reuters get it so wrong? 
  • Why did Reuters, the Times, the Wall Street Journal, the Global Warming Policy Foundation and Mr Rees-Mogg MP not check the figures? 
  • Did Reuters ineptly make this up or did they get it from somewhere else?

Sunday 4 November 2012

Timsbury Environment Group meeting with Mr Rees-Mogg MP

In October 2012 the Timsbury Environment Group published a report of a meeting with Mr Rees-Mogg MP on his views on carbon emissions and climate change. The report is available from www.timsbury.net. The group “found alarming the opinions on climate change of our M.P., Jacob Rees-Mogg”. This report was shown to the MP and it was made clear by the group that it would have a wider circulation. Selected observations from the report include:

“R-M favours development towards exploitation of shale gas despite the fact that this might be incompatible with meeting carbon targets of the Climate Change Act of 2008. He is prepared to see the carbon reduction targets of the Climate Change Act of 2008 changed to allow increased carbon emissions.”

“R-M did not appear to accept the judgement on climate change of the International Panel on Climate Change (IPCC), endorsed by the Royal Society, the U.S. National Academy of Sciences and the leading science academies in most of the world, and believes that lots of scientists hold seriously different views.”

“R-M said he found "attractive" the opinions of the pressure group led by Nigel Lawson,
former chancellor of the exchequer.”

The pressure group led by Nigel Lawson is the climate sceptic Global Warming Policy Foundation. The former Energy Minister Chris Huhne has described the GWPF as "misinformed", "wrong" and "perverse".

The GWPF’s first briefing paper can be found here.
Chris Huhne’s response to the briefing paper as Energy Minister can be found here.
A media response can be found here.

Obfuscating behind media reports (frequently from the USA) and cherry picking information is a common tactic of the GWPF. The same tactic used by Mr Rees-Mogg in relation to his shale gas figures.

Lost. Rees-Mogg fracking articles gone missing.

On the 21st June 2012 in an article in the Chew Valley Gazette Mr Rees-Mogg MP said that “Planning is an area where I think informed local consent needs to be central to any approval”.

Mr Rees-Mogg has published three newspaper articles in the local press on shale gas fracking in the Somerset Guardian, the MN&R Journal and the Chew Valley Gazette (October page 20). In these articles Mr Rees-Mogg expressed a personal view in support of fracking based on flawed information from a confused Reuters news report, rather than relying on freely available credible information from the UK Government Department of Energy and Climate Change and the British Geological Society, for example: Parliamentary Note on Shale Gas and Fracking http://www.parliament.uk/briefing-papers/SN06073

Mr Rees-Mogg’s articles are conspicuous by their absence from his web site. Is Mr Rees-Mogg taking a selective view of history?

Is this the best way for the electorate to be informed?

Saturday 3 November 2012

Wikipedia offshore shale gas error, BGS evidence

The current (3/Nov/2012) Wikipedia article on shale gas http://en.wikipedia.org/wiki/Shale_gas references the Reuters report and repeats the flawed estimate that the UK has 1,000 trillion cubic feet of offshore reserves (recoverable) rather than resources (in the ground).

In written evidence to the Select Committee on Energy and Climate Change, prepared on the 25th October 2012, the British Geological Survey states that “The BGS is not aware of any offshore assessment for shale gas”. In the same document BGS tentatively estimate the Irish Sea resource to be 1,000 tcf, a portion of which could be recovered, perhaps 2.35% - 10% or higher. 

The Reuters report confuses reserves and resources. Mr Rees-Mogg confuses reserves and resources. The British Geological Survey should be the trusted source of information for UK shale gas estimates, not Reuters or Wikipedia.

Friday 2 November 2012

Debunking Mr Rees-Mogg's Shale Gas Figures

Mr Rees-Mogg has recently told constituents In North East Somerset of the potential benefits of hydraulic fracturing (http://tinyurl.com/rm-frack-somerset-g), and says that “the UK has 60 years of onshore reserves and 300 years offshore”, based on gas reserves totalling 1,200 trillion cubic feet (tcf). He tells constituents that these “vast” reserves have the following benefits :

  • National energy security
  • Lower gas prices for households and industry
  • Lower heating bills
  • Increased competitiveness  

Unfortunately his information comes from an unattributable Reuters report, he has cherry picked the information in the report and he has inflated the shale gas reserves by an order of magnitude.

Jacob Rees-Mogg estimate
360 years shale gas supply
British Geological Survey estimate
9 - 16 years shale gas supply

NB BGS state that it "is not aware of any offshore assessment for shale gas". The figure above is based simply on the "five to ten times" guesstimate referred to below.

The Rees-Mogg Information Source
Mr Rees-Mogg has used this information source: http://tinyurl.com/rm-frack-source which is a news agency report repeating claims of vast UK shale gas reserves. The figures used in the Reuters report and by Mr Rees-Mogg cannot all be traced back to credible estimates of shale gas reserves and do not reflect the current state of knowledge.

Alternative Credible Sources of Information
Informed estimates of UK shale gas resources are available from:

An additional estimate is available from Caudrilla Resources but has not been verified yet by the British Geological Survey.

A reassessment of shale gas resources will be published later in 2012 by DECC, Reuters has nothing to do with it.

Mr Rees-Mogg's / Reuters Figures
Reuters says UK onshore resources are 200 tcf and offshore resources are 1,000 tcf, but adds that only 10-20% of the gas may be recoverable. Reuters used the term 'reserve' whereas they should have used the term 'resource'. The resource is the total amount of gas in the ground, while the reserve is the amount of gas which could be recovered - i.e. the 10-20%.
Mr Rees-Mogg ignores the fact that only a portion of the gas resource can be recovered and assumes useable reserves of 200 tcf and 1,000 tcf respectively. Using a national consumption factor of 3.5 tcf per annum Mr Rees-Mogg then extrapolates:
200 tcf / 3.5 tcf = 57 year onshore supply
1,000 tcf / 3.5 tcf = 286 year offshore supply
Mr Rees-Mogg rounds these figures up to a 60 years onshore supply and a 300 year offshore supply of gas. A veritable Bonanza of shale gas!
HOWEVER, instead of taking the whole resource and dividing by 3.5 Mr Rees-Mogg should have taken just 10-20% of gas which might actually be recovered.

Lower 10% estimate:
20 tcf / 3.5 tcf = 5.7 year onshore supply
100 tcf / 3.5 tcf = 28.6 year offshore supply
Upper 20% estimate:
40 tcf / 3.5 tcf = 11.4 year onshore supply
200 tcf / 3.5 tcf = 57 year offshore supply

So, that makes for a national supply of between 34.3 years and 68.4 years.
HOWEVER, where do the 200 tcf and 1,000 tcf figures come from? Reuters do not say where the 200 came from, but it could be either the US Energy Information Administration (EIA) or from Caudrilla Resources which are both 200 tcf. The EIA estimate is from a general global assessment and the Caudrialla estimate is based on fracking tests in Lancashire (not yet verified). The 1,000 tcf seems to derive from an off the cuff answer to a question to BGS during evidence to the Energy and Climate Change Select Committee in February 2011. When asked how much bigger the offshore resource is compared to the onshore resource the BGS representative said “say five to ten, something like that”. BUT in this guestimate he was referring to five to ten times the BGS resource figure of 5.3 tcf, not the Caudrilla estimate which was not published until September 2011 or the EIA estimate.

So, if we take the British Geological Survey’s estimate of onshore recoverable shale gas, which is 5.3 tcf then we get the estimate:

5.3 tcf / 3.5 tcf =  1.5 year onshore supply
26.5 tcf / 3.5 tcf = 7.6 year offshore supply @ 10% recovery
53 tcf / 3.5 tcf = 15 year offshore supply @ 20% recovery

The combined onshore and offshore estimate Is then between 9.1 years and 16.5 years supply - not 300 years !

Estimates of Shale Gas Resources and Reserves in trillions of cubic feet (tcf)

J.R-M
Reuters
US EIA
British Geological Survey
(tentative)
Caudrilla Resources
Advanced Resources
Onshore resource
200
200
-
200
97
Onshore reserve
200
20 - 40
20
5.3
20 - 40
20
Offshore resource
1000
-
26.5 - 53
-
-
Offshore reserve
1,000
100 - 200
-

-
-
Onshore + offshore
1,200
120 - 240

31.8 - 58.3


Supply in years
342
34 - 69

9 - 16



Reserves are given assuming a 10% gas recovery rate. Advanced Resources use a 21% recovery rate.

There is much uncertainty over shale gas resources in the UK, and better estimates will emerge, but the estimate of a 360 year national supply has been cooked up by someone and promulgated by the Global Warming Policy Foundation and now Mr Rees-Mogg.

Implications
The implications are that Mr Rees-Mogg has told constituents that shale gas reserves (what could actually be recovered) are vastly higher than the current state of knowledge, and on that basis has further told constituents that they could have better energy security and lower gas bills. Some constituents don’t even have mains gas.

This kind of misinformation has no place in our democracy where important policy and planning decisions are being made.

In evidence to the Energy and Climate Change Select Committee DECC states that, “It is difficult to see how offshore shale gas might become a real prospect within the next few decades” adding “At the present time there is no known offshore exploration activity for unconventional gas anywhere in the world”. The Reuters report to which Mr Rees-Mogg refers also states that, “for the offshore industry to become viable, you'd need vastly higher energy costs”.

In recent written evidence to the Department of Energy and Climate Change the right leaning think tank the Policy Exchange (“David Cameron’s favourite think tank”) states “commentators who argue with great certainty that shale gas is the answer to future energy needs fail to recognise uncertainty about the future and neglect the importance of developing zero carbon technologies to meet long term emissions reduction goals”.  

Summary
  • Constituents have been misinformed by their MP about the potential volumes of shale gas, even his own source is actually 5 to 10 times lower that what he says
  • Constituents have not been informed by their MP that offshore shale gas production would need "vastly higher energy prices"
  • Rather than using a confused Reuters report and then making even more confused and outlandish claims, Mr Rees-Mogg should have gone to information provided to him by the Parliamentary Office for Science and Technology and the Standard Note on Shale gas and fracking (SN/SC/6073) (http://www.parliament.uk/briefing-papers/SN06073) published in July this year and which gives a balanced overview, or to the estimates of the Department for Energy and Climate Change or the British Geological Survey.
Questions
  • Why did Mr Rees-Mogg go to the Reuters report rather than official British estimates?
  • Why is he so confident in his conviction when he not seem to understand the basic principles?
  • Why are his fracking articles not on his web site?
  • Who is advising him so badly?

References
The Rees-Mogg Reuters Report
http://tinyurl.com/rm-frack-source

Rees-Mogg article in Somerset Guardian - Benefits fracking could bring are surely worth investigating
http://tinyurl.com/rm-frack-somerset-g

Rees-Mogg article in MNRJournal - Fracking good for the economy – less fuel poverty
http://tinyurl.com/rm-frack-mnrj

Rees-Mogg article in Chew Valley Gazette - Fracking offers benefits
http://www.chewvalleygazette.co.uk, page 20 of the October 2012 edition. Click on the current digital and then use the archive tab.

Tim Richards letter to Chew Valley Gazette
www.chewvalleygazette.co.uk/news.cfm?id=37599&searchword=shale

Parliamentary Note on Shale Gas and Fracking
http://www.parliament.uk/briefing-papers/SN06073

ECCC Written Evidence
http://tinyurl.com/eccc-shale-gas-2012-13

Tyndall Centre for Climate Change
http://tinyurl.com/tyndall-shalegas

British Geological Survey, The impact of shale gas on energy markets, Written evidence to the Select Committee on Energy and Climate Change
http://www.publications.parliament.uk/pa/cm201213/cmselect/cmenergy/writev/isg/m17.htm

6/11/12
Also  see http://www.carbonbrief.org/blog/2012/04/1,000-trillion-cubic-feet-of-shale-gas

Thursday 1 November 2012

Hon Jacob Rees-Mogg MP Perspective on Environment, Climate Change and Shale Gas

This post is for the benefit of constituents of North East Somerset, England, and is on the known views on environment climate change and shale gas of Hon Jacob Rees-Mogg MP. Further, it tries to make sense of the volumes of gas reserves that he has told constituents exist in the UK. 

Our Member of Parliament the Hon Mr Jacob Rees-Mogg is famous for his informative and often amusing historical references and, on occasion, for using extraordinarily long words in his Parliamentary appearances.  He often speaks in Parliamentary debates and has an excellent voting record. He has a broad range of interests especially focusing on economic and fiscal issues, the European Union and of course history. He can also be a bit of a rebel. 

As our MP he represents us in Parliament on the full spectrum of government business, no easy task, but we don’t necessarily know what he thinks on a specific issue unless it is brought to our attention in the local or the national media or through a circular from his office. Mr R-M has recently published articles in the local press, including the Chew Valley Gazette, concerning energy policy. These days energy policy cannot be discussed without also considering the environment. So, now that the topic has come up what are Mr Rees-Mogg’s views on energy and environment, including global climate change? 

The public media debate on the causes of global warming had almost run its course until Lord Lawson of Blaby set up the Global Warming Policy Foundation (GWPF) in November 2009 and started a media campaign to counter the global warming consensus. There is nothing wrong with having contrary views to a consensus or having an open debate and we should embrace scientific skepticism to enable us to come to a better understanding of the world. However, many of the claims made by the GWPF have been shown to be demonstrably wrong and they do not submit them to scientific peer-review. A familiar tactic of the GWPF is to harvest contrary climate sceptic news reports from US based websites, cherry pick information which suits their argument and then present them on their web site as if they were facts. In November 2011 the former Energy Secretary Chris Huhne wrote a withering criticism of a GWPF paper on climate change and stated that “... the scientific case for action is robust. We would be failing in our duties to pretend otherwise and we must with other countries around the world take the actions necessary to protect our planet from significant climate change for today’s and future generations” (http://tinyurl.com/c-huhne-gwpf-letter). Imperial College in written evidence to Department of Energy and Climate Change (DECC)  recently described the GWPF evidence on the economics of Wind Farms as “nonsense” and gave a detailed analysis of why they are nonsense (http://tinyurl.com/ic-cep-economics-of-wind). David Attenborough, who has been accused of alarmist speculation by Lord Lawson for saying that Arctic summer ice had declined, said recently that “most people would recognise that Lawson is up a gumtree” (http://tinyurl.com/da-gumtree).

Mr Rees-Mogg has raised my concerns about the GWPF and its possible influence on MPs and government policy with the DECC. The Minister of State,  the Rt Hon Gregory Barker (Conservative), has kindly replied and reassured me that government policy related to climate change is informed by science. But what does Mr Rees-Mogg think?

The Timsbury Environment Group (TEG) held a meeting with Mr Rees-Mogg in September to discover his views on recent developments in climate change. The TEG made it clear that their report would be made available to the wider community and it can be found at  http://tinyurl.com/reg-jrm-meeting . Amongst other things the report states that Mr Rees-Mogg “finds attractive” the opinions of the GWPF and that he favours the development of shale gas and is prepared to see the 2008 Climate Change Act changed to allow increased carbon emissions. In conclusion the “TEG found alarming the opinions on climate change of our MP Jacob Rees-Mogg”.

What else do we know about our MP's views on environment, climate change and energy? In May this year Mr RM gave a lecture at the the Centre for Policy Studies entitled Is Disraeli Right: ‘A sound conservative government... Tory men and Whig measures’? in which he lays out a vision of “full-blooded Toryism” including a business-based growth strategy. Who would disagree with a business-based growth strategy, but on what basis? Mr R-M says in his lecture:

“Environmental and recycling targets need to be looked at to see if they serve any useful economic purpose or are merely part of green orthodoxy. This leads on to cheap energy which will be essential if we are to compete globally. Hydraulic fracturing may be part of the solution but carbon emission targets will not be. Even if the greens are right Britain will make very little difference on her own and I would rather my constituents were warm and prosperous rather than cold and impoverished as we are overtaken by emerging markets who understandably put people before polar bears.”

He also says to his audience that the “battle of ideas has to be won”. That sounds like a challenge.

Our economy and wellbeing cannot be divorced from our environment which provides us with resources and ecosystem services. Even the financial services of the City rely on it, otherwise where would the traders be without food to eat and fresh water to drink? Environmental regulations and the protection of habitats are not there for direct economic purpose nor, so called, green orthodoxy, they are there to protect the environment and the ecosystems on which we are entirely reliant. In a lecture to the Royal Society in 1988 Margaret Thatcher (a scientist) said of environmental protection:

Even though this kind of action may cost a lot, I believe it to be money well and necessarily spent because the health of the economy and the health of our environment are totally dependent upon each other. Stable prosperity can be achieved throughout the world provided the environment is nurtured and safeguarded”.
Tal, A, 2006

Despite being an island we do not live in isolation and we share finite global resources. Our inter-connectivity and the need for environmental controls to protect our natural wealth are starkly highlighted by the recent discovery of Ash dieback (chalara fraxinea), in English forests and there is a serious risk that our Ash tree population will be decimated. What are the economic costs of not adequately protecting our forests against the loss of 80 million Ash trees? The costs are not just economic but also social, environmental and ecological.

Mr Rees-Mogg has recently told us of the potential benefits of hydraulic fracturing. Unfortunately he used the same tactics as the GWPF by quoting an unattributable Reuters report, cherry picking the information that suited his argument and then inflated the figures by an order of magnitude.

He tells us (http://tinyurl.com/rm-frack-somerset-g) that the Reuters report said “the UK has 60 years of onshore reserves and 300 years offshore”.  

What Reuters actually says is that UK onshore resources are 200 tcf and offshore resources are 1,000 tcf, but adds that only 10-20% of the gas may be recoverable. Reuters actually used the term 'reserve' whereas they should have used the term 'resource'. The resource is the total amount of gas in the ground, whereas the reserve is the amount of gas which could be recovered - i.e. the 10-20%.

Mr Rees-Mogg ignores the fact that only a portion of the gas resource can be recovered and assumes useable reserves of 200 tcf and 1,000 tcf respectively. Using a national consumption factor of 3.5 tcf per annum Mr Rees-Mogg then extrapolates:

200 tcf / 3.5 tcf = 57 year onshore supply
1,000 tcf / 3.5 tcf = 286 year offshore supply

Mr Rees-Mogg rounds these figures up to a 60 years onshore supply and a 300 year offshore supply of gas. A veritable Bonanza of shale gas!

Instead of taking the whole resource and dividing by 3.5 Mr Rees-Mogg should have taken just 10-20% of gas which might actually be recovered.

Lower 10% estimate:
20 tcf / 3.5 tcf = 5.7 year onshore supply
100 tcf / 3.5 tcf = 28.6 year offshore supply

Upper 20% estimate:
40 tcf / 3.5 tcf = 11.4 year onshore supply
200 tcf / 3.5 tcf = 57 year offshore supply


So that makes for a national supply of between 34.3 years and 68.4 years.

HOWEVER, where to the 200 tcf and 1,000 tcf figures come from? Reuters do not say where the figure of 200 came from, but it could be either the US Energy Information Administration (EIA) or from Caudrilla Resources which both use a figure of 200 tcf. The EIA estimate is from a general global assessment and the Caudrialla estimate is based on fracking tests in Lancashire (not yet verified). The 1,000 tcf seems to derive from an off the cuff answer to a question to BGS during evidence to the Energy and Climate Change Select Committee in February 2011. When asked how much bigger the offshore resource is compared to the onshore resource the BGS representative said “say five to ten, something like that”. BUT in this guestimate he was referring to five to ten times the BGS resource figure of 5.3 tcf, not the Caudrilla estimate which was not published until September 2011 or the EIA estimate.

So, if we take the British Geological Survey’s estimate of onshore recoverable shale gas, which is 5.3 tcf then we get the estimate:

5.3 tcf / 3.5 tcf =  1.5 year onshore supply
26.5 tcf / 3.5 tcf = 7.6 year offshore supply @ 10% recovery
53 tcf / 3.5 tcf = 15 year offshore supply @ 20% recovery

Then we get a combined onshore and offshore estimate of between 9.1 years and 16.5 years supply - not 300 years !

Estimates of Shale Gas Resources and Reserves in trillions of cubic feet (tcf)

J.R-M
Reuters
US EIA
British Geological Survey
Caudrilla Resources
Onshore resource
200
200
-
200
Onshore reserve
200
20 - 40
20
5.3
20 - 40
Offshore resource
1000
-
26.5 - 53
-
Offshore reserve
1,000
100 - 200
-

-
Onshore + offshore
1,200
120 - 240

31.8 - 58.3

Supply in years
342
34 - 69

9 - 16

Reserves are given assuming a 10% gas recovery rate.

There is certainly much uncertainty about shale gas resources in the UK, and better estimates will emerge, but the estimate of a 360 year national supply has been cooked up by someone and promulgated by the Global Warming Policy Foundation and now Mr Rees-Mogg. 

In recent written evidence to the Department of Energy and Climate Change the right leaning think tank the Policy Exchange (“David Cameron’s favourite think tank”) states “commentators who argue with great certainty that shale gas is the answer to future energy needs fail to recognise uncertainty about the future and neglect the importance of developing zero carbon technologies to meet long term emissions reduction goals”, but in his lecture JRM has said that carbon emission targets are not part of the solution.  

In evidence to the Energy and Climate Change Select Committee DECC states that, “It is difficult to see how offshore shale gas might become a real prospect within the next few decades” adding “At the present time there is no known offshore exploration activity for unconventional gas anywhere in the world”. The Reuters report to which Mr Rees-Mogg refers states that, “for the offshore industry to become viable, you'd need vastly higher energy costs”.

The Tyndall Centre for Climate Change has estimated that the investment necessary to exploit shale gas would be between £19 billion and £32 billion over the next twenty years and would probably impact on investments in renewable energy. They also estimate that this investment would return less energy pound for pound than renewables and would compromise the UK’s commitments to reducing greenhouse gas emissions

Rather than using a confused Reuters report and then making even more confused and outlandish claims, Mr Rees-Mogg should have gone to information provided to him by the Parliamentary Office for Science and Technology and the Standard Note on Shale gas and fracking (SN/SC/6073) (http://www.parliament.uk/briefing-papers/SN06073) published in July this year and which gives a balanced overview, or to the estimates of the Department for Energy and Climate Change or the British Geological Survey. Why did he go to the Reuters report rather than official British estimates? Why is he so confident in his conviction when he not seem to understand the basic principles? Why are his fracking articles not on his web site? Who is advising him so badly?

Has Mr Rees-Mogg joined Lord Lawson up the climate change gum tree? I believe that Mr Rees-Mogg is going to have to work a lot harder to win the battle of ideas. The least that we should expect is that this debate is based on credible information from transparent sources and within a scientific framework. In that context we can all express our diverse opinions and come to an informed position. This is actually what the Department of Energy and Climate Change is doing but unfortunately our MP has chosen to take another path.

I am a constituent who wants to be both “warm and prosperous” and have a sustainable global economy based on a sustainable global environment - including habitats for polar bears. Why would we strive for less?

All of my information sources are given below so that the reader can see where I have selected information to support my argument and so that you can make up your own mind on whether Mr Rees-Mogg's views on shale gas resources are credible. 

The Rees-Mogg Reuters Report
http://tinyurl.com/rm-frack-source


Rees-Mogg article in Somerset Guardian, Benefits fracking could bring are surely worth investigating
http://tinyurl.com/rm-frack-somerset-g


Rees-Mogg article in MNRJournal Fracking good for the economy – less fuel poverty
http://tinyurl.com/rm-frack-mnrj
 

Rees-Mogg article in Chew Valley Gazette
http://www.chewvalleygazette.co.uk, page 20 of the October 2012 edition. Click on the current digital and then use the archive tab.

Tim Richards letter to Chew Valley Gazette
www.chewvalleygazette.co.uk/news.cfm?id=37599&searchword=shale

 
Jacob Rees-Mogg Lecture to the Centre for Policy Studies
http://tinyurl.com/jrm-lecture


Parliamentary Note on Shale Gas and Fracking
http://www.parliament.uk/briefing-papers/SN06073
 
Minister of State Chris Huhne’s letter to the GWPF
http://tinyurl.com/c-huhne-gwpf-letter


ECCC Written Evidence
http://tinyurl.com/eccc-shale-gas-2012-13


Tyndall Centre for Climate Change
http://tinyurl.com/tyndall-shalegas 


Imperial College evidence on the economics of wind power
http://tinyurl.com/ic-cep-economics-of-wind


David Attenborough: force of nature
http://tinyurl.com/da-gumtree


Tal A., Ed, 2006, Speaking of Earth - Environmental speeches that moved the world, Rutgers University Press