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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

Bridge over the River Kwai

 

 

In 1957-58 the film ‘The Bridge on the River Kwai‘ was ground breaking.  It was remarkable for being mainly shot on location (in Ceylon not Thailand) rather than in a studio and for involving the construction and demolition of a real, fully functioning rail bridge.   It's still regarded by many as one of the finest movies ever made. 

One of the things a tourist to Bangkok is encouraged to do is to take a day trip to the actual bridge.

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Fiction, Recollections & News

Egyptian Mummies

 

 

 

 

Next to Dinosaurs mummies are the museum objects most fascinating to children of all ages. 

At the British Museum in London crowds squeeze between show cases to see them.  At the Egyptian Museum in Cairo they are, or were when we visited in October 2010 just prior to the Arab Spring, by far the most popular exhibits (follow this link to see my travel notes). Almost every large natural history museum in the world has one or two mummies; or at the very least a sarcophagus in which one was once entombed.

In the 19th century there was something of a 'mummy rush' in Egypt.  Wealthy young European men on their Grand Tour, ostensibly discovering the roots of Western Civilisation, became fascinated by all things 'Oriental'.  They would pay an Egyptian fortune for a mummy or sarcophagus.  The mummy trade quickly became a lucrative commercial opportunity for enterprising Egyptian grave-robbers.  

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Opinions and Philosophy

Issues Arising from the Greenhouse Hypothesis

This paper was first written in 1990 - nearly 30 years ago - yet little has changed.

Except of course, that a lot of politicians and bureaucrats have put in a lot of air miles and stayed in some excellent hotels in interesting places around the world like Kyoto, Amsterdam and Cancun. 

In the interim technology has come to our aid.  Wind turbines, dismissed here, have become larger and much more economic as have PV solar panels.  Renewable energy options are discussed in more detail elsewhere on this website.

 


 

Climate Change

Issues Arising from the Greenhouse Hypothesis

 

Climate change has wide ranging implications for the World, 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.  The following paper explores some of the issues and their potential impact.

 

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