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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

Peru

 

 

In October 2011 our little group: Sonia, Craig, Wendy and Richard visited Peru. We flew into Lima from Rio de Janeiro in Brazil. After a night in Lima we flew to Iquitos.

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Fiction, Recollections & News

My Art and Artists

 

 

One recreation that I find very absorbing is drawing and painting. 

Having once been married to an exceptionally talented artist (now Brenda Chat) I do not pretend great skill or insight.

I always drew and painted but living with Brenda was like someone who has just mastered ‘chopsticks’ on the piano being confronted by Mozart. 

Our daughter Emily has inherited or acquired some of her mother’s skill and talent.  

Emily and I once attended life classes together and I am awed by her talent too.  One of her drawings hangs behind me as I write.  It is a wonderful pencil study of a life class nude. 

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Opinions and Philosophy

Gambling – an Australian way of life

 

 

The stereotypical Australian is a sports lover and a gambler.  Social analysis supports this stereotype.  In Australia most forms of gambling are legal; including gambling on sport.  Australians are said to lose more money (around $1,000 per person per year) at gambling than any other society.  In addition we, in common with other societies, gamble in many less obvious ways.

In recent weeks the Australian preoccupation with gambling has been in the headlines in Australia on more than one level. 

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