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Hydroelectricity

 

Hydro-electricity is presently the largest contributor to renewable energy worldwide; in Australia and particularly in NSW.

 

Hydro-electricity also is more desirable than wind generation because of a higher capacity factor and ability to produce power on demand.

 

But hydro-electricity is resource constrained as it is difficult to build new dams in the developed countries that are presently heavy fossil fuel consumers.

Dams flood private property and/or National parks and have many self-interested and environmentally concerned opponents.  Hydro-electric schemes interfere with natural river flows and related wildlife, particularly when they involve extensive inundation.  It has become politically very difficult to construct new dams in Australia, even when the potential energy resource is significant. 

Nevertheless in developing countries like China, India and Vietnam there are large hydro-electricity resources that remain unexploited.

 

 

 

 


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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

Skydiving

 

 

On the morning of May1st 2016 I jumped, or rather slid, out of a plane over Wollongong at 14,000 feet.

It was a tandem jump, meaning that I had an instructor strapped to my back.

 


Striding Confidently Before Going Up

 

At that height the curvature of the earth is quite evident.  There was an air-show underway at the airport we took off from and we were soon looking down on the planes of the RAAF  Roulette aerobatic display team.  They looked like little model aircraft flying in perfect formation.  

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Opinions and Philosophy

Now we are vaccinated

 

 

 

Now that every adult in my extended family is vaccinated is my family safe from Covid-19?

The short answer is no.  No vaccine is 100% effective. Yet, we are a lot safer. 

It's a bit hard to work it out in Australia as, although we are familiar with lockdowns, we have so little experience with the actual disease.

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