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Carbon Reduction Imperative 

 

 

Due to improving living standards in developed and some developing countries (China India, Indonesia, Korea, Malaysia, Vietnam, Singapore etc) the worldwide demand for energy for electricity generation has been growing by around 2% pa worldwide.

 

Worldwide electrical energy is predominantly based on the combustion of fossil fuels (carbon and a proportion of hydrogen). The carbon is released as atmospheric carbon dioxide (CO2). The consequent exponential release of CO2is believed to be threatening the climate of the planet. This is compounded by the release of methane and other air, water and land pollution (associated with industrialisation) and the widespread disruption of the natural carbon cycle by tree clearing and broad-acre farming and grazing monocultures and damage to marine ecosystems (as a result of exponential population growth).

 

In response, carbon mitigation strategies are in place throughout the developed world to attempt to contain the growth of atmospheric CO2. To facilitate these strategies, renewable energy technologies are projected to make an increasing contribution to world energy consumption. The stronger these carbon mitigation strategies are; the more competitive low carbon and renewable energy becomes.

 
Although there are various experimental and speculative alternative (low carbon and renewable) electricity solutions, this article focuses on those that presently make a significant contribution, or may do within the next 20 years. For the purposes of this analysis these alternatives are:
 
  •  Hydro
  •  Wind
  •  Solar
  •  Geothermal
  •  Biomass/Biogas (including wood, algae and bio/solar)
  •  Marine (tides, waves, currents)
  •  Nuclear (including fusion)

 

Some of these involve more 'whole of life' carbon production in their manufacture; installation; maintenance; demolition; and recycling than others.  The following analysis is based on the assumption that they actually run, and produce useful electricity, for their estimated lifetime.  If they become ‘white elephants’ their carbon footprint becomes very large indeed.

 

 

Comparative Carbon Footprints

 

 

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Source: UK Parliamentary Office of Science and Technology - Carbon Footprint of Electricity Generation

 

 

 

 


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Travel

Cuba

 

 

 

What can I say about Cuba? 

In the late ‘70s I lived on the boundary of Paddington in Sydney and walked to and from work in the city.  Between my home and work there was an area of terrace housing in Darlinghurst that had been resumed by the State for the construction of a road tunnel and traffic interchanges.  Squatters had moved into some of the ‘DMR affected’ houses.  Most of these were young people, students, rock bands and radically unemployed alternative culture advocates; hippies. 

Those houses in this socially vibrant area that were not condemned by the road building were rented to people who were happy with these neighbours: artists; writers; musicians; even some younger professionals; and a number were brothels.  

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Fiction, Recollections & News

The U-2 Incident

 

 

 

In 1960 the Russians shot down an American U-2 spy plane that was overflying and photographing their military bases.  The U-2 Incident was big news when I was in High School and I remember it quite clearly. 

The Incident forms the background to Bridge of Spies a 2015 movie, directed by Steven Spielberg and starring Tom Hanks and Mark Rylance from a screenplay written by Matt Charman together with Ethan and Joel Coen that centres on these true events. 

Spielberg and the Cohen Brothers.  Who could miss it?

 

 

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Opinions and Philosophy

Population and Climate Change – An update

 

 

Climate

 

I originally wrote the paper, Issues Arising from the Greenhouse Hypothesis, in 1990 and do not see a need to revise it substantially.  Some of the science is better defined and there have been some minor changes in some of the projections; but otherwise little has changed.

In the Introduction to the 2006 update to that paper I wrote:

Climate change has wide ranging implications...  ranging from its impacts on agriculture (through drought, floods, water availability, land degradation and carbon credits) mining (by limiting markets for coal and minerals processing) manufacturing and transport (through energy costs) to property damage resulting from storms.

The issues are complex, ranging from disputes about the impact of human activities on global warming, to arguments about what should be done and the consequences of the various actions proposed.

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