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What everyone should know

Most of us already know that an atom is the smallest division of matter that can take part in a chemical reaction; that a molecule is a structure of two or more atoms; and that life on Earth is based on organic molecules: defined as those molecules that contain carbon, often in combination with hydrogen, oxygen and nitrogen as well as other elements like sodium, calcium, phosphorous and iron.  

Organic molecules can be very large indeed and come in all shapes and sizes. Like pieces in a jigsaw puzzle molecular shape is often important to an organic molecule's ability to bond to another to form elaborate and sometimes unique molecular structures.

All living things on Earth are comprised of cells and all cells are comprised of numerous molecular structures.

Unlike the 'ancients', most 'moderns' also know that each of us, like almost all animals and all mamals, originated from a single unique cell, an ova, that was contributed by our mother.  This was fertilised by a single unique sperm from our father.

This 'fertilisation' triggered the first cell division. These two cells divided; and divided again and again; through gestation and on to birth childhood. So that by the time we are adults we've become a huge colony of approximately thirty seven thousand billion, variously specialised, cells of which between sixty and a hundred billion die and are replaced every day. Thus the principal function of a cell, over and above its other specialised purposes, is replication. 

As a result, the mass of cells we lose each year, through normal cell division and death, is close to our entire body weight. Some cells last much longer than a year but few last longer than twenty years. So each of us is like a corporation in which every employee and even the general manager has changed, yet the institution goes on largely as before, thanks to a comprehensive list of job descriptions carried by every cell - our genome.

Cell replication is what we call 'life'.  The replicating DNA molecule can therefore be regarded as the 'engine of life' or the 'life force' on Earth.  So it is quite a good thing to understand. 

 


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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 Secret

The Secret

By Richard McKie

 

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Lansing Michigan was a fine place to grow up, she guessed.  It was nice, and safe.

Her dad worked in the Michigan State Government and her mum stayed home. They weren’t rich but they were comfortable. Their new house was big, the nicest they had lived in and it was in a really good area. 

She had never been overseas, unless you count nearby Canada, and that was mainly on trips to Niagara Falls, usually when one of Mum’s sisters came to stay. When they passed through Sarnia, into Canada, Dad would always say "Yea! Overseas again!". It was about his only joke.

Sometimes they went through Detroit. But after what had happened there the last time she shut that out of her consciousness. No wonder she is timid and takes fright easily. Now if a friend even seemed to be driving in that direction she would go into the foetal position and shut-down.

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Opinions and Philosophy

A modern fairytale - in a Parallel Universe

 

I've dusted off this little satirical parable that I wrote in response to the The Garnaut Climate Change Review (2008).  It's not entirely fair but then satire never is.

 


 

 

In a parallel universe, in 1920† Sidney, the place where Sydney is in ours, had need of a harbour crossing.

An engineer, Dr Roadfield, was engaged to look at the practicalities; including the geology and geography and required property resumptions, in the context of contemporary technical options. 

After considering the options he reported that most advanced countries solve the harbour crossing problem with a bridge.  He proposed that they make the decision to have a bridge; call for tenders for an engineering design; raise the finance; and build it.  We'll call it the 'Sidney Harbour Bridge' he said; then less modestly: 'and the new crossing will be called the Roadfield Highway'. 

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