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What you 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, and may include other elements like sodium, calcium, phosphorous and iron.  

Organic molecules can be extremely large.  Familiar extremely large organic molecules include plastics like polyethylene and many proteins, like spider web.

Chromosomes are structures within the cells of animals and plants consisting of very large molecules of  DNA (Deoxyribonucleic acid).   DNA stores and replicates information. It encodes the genes used by all complex living organisms on Earth to reproduce and function. 

The exception is viruses that use RNA to replicate by hijacking a host cell's DNA.  The ability of DNA to accurately replicate allows living organisms to divide and thus pass on life to their successors down the generations. 

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. 

It's amazing to think that we have only understood it within my lifetime, so throw away all those ancient texts.

 

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Travel

South Korea & China

March 2016

 

 

South Korea

 

 

I hadn't written up our trip to South Korea (in March 2016) but Google Pictures gratuitously put an album together from my Cloud library so I was motivated to add a few words and put it up on my Website.  Normally I would use selected images to illustrate observations about a place visited.  This is the other way about, with a lot of images that I may not have otherwise chosen.  It requires you to go to the link below if you want to see pictures. You may find some of the images interesting and want to by-pass others quickly. Your choice. In addition to the album, Google generated a short movie in an 8mm style - complete with dust flecks. You can see this by clicking the last frame, at the bottom of the album.

A few days in Seoul were followed by travels around the country, helpfully illustrated in the album by Google generated maps: a picture is worth a thousand words; ending back in Seoul before spending a few days in China on the way home to OZ. 

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Fiction, Recollections & News

Bonfire (Cracker) Night

 

 

We children were almost overcome with excitement.  There had been months of preparation.  Tree lopping and hedge trimmings had been saved; old newspapers and magazines stacked into fruit boxes; a couple of old tyres had been kept; and the long dangerously spiky lower fronds from the palm trees were neatly stacked; all in preparation. 

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Opinions and Philosophy

Tragedy in Norway

 

 

The extraordinary tragedy in Norway points yet again to the dangers of extremism in any religion. 

I find it hard to comprehend that anyone can hold their religious beliefs so strongly that they are driven to carefully plan then systematically kill others.  Yet it seems to happen all to often.

The Norwegian murderer, Anders Behring Breivik, reportedly quotes Sydney's Cardinal Pell, John Howard and Peter Costello in his manifesto.   Breivik apparently sees himself as a Christian Knight on a renewed Crusade to stem the influx of Muslims to Europe; and to Norway in particular.

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