* take nothing for granted    
Unless otherwise indicated all photos © Richard McKie 2005 - 2021

Who is Online

We have 75 guests and no members online

Article Index

 

 

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. 

 


    Have you read this???     -  this content changes with each opening of a menu item


Travel

Egypt, Syria and Jordan

 

 

 

In October 2010 we travelled to three countries in the Middle East: Egypt; Syria and Jordan. While in Egypt we took a Nile cruise, effectively an organised tour package complete with guide, but otherwise we travelled independently: by cab; rental car (in Jordan); bus; train and plane.

On the way there we had stopovers in London and Budapest to visit friends.

The impact on me was to reassert the depth, complexity and colour of this seminal part of our history and civilisation. In particular this is the cauldron in which Judaism, Christianity and Islam were created, together with much of our science, language and mathematics.

Read more ...

Fiction, Recollections & News

The Greatest Aviation Mystery of All Time

 

 

The search for Malaysia Airlines Flight 370 was finally called off in the first week of June 2018.

The flight's disappearance on the morning of 8 March 2014 has been described as the greatest aviation mystery of all time, surpassing the disappearance of Amelia Earhart in 1937.  Whether or no it now holds that record, the fruitless four year search for the missing plane is certainly the most costly in aviation history and MH370 has already spawned more conspiracy theories than the assassination of JFK; the disappearance of Australian PM Harold Holt; and the death of the former Princess Diana of Wales; combined.

Read more ...

Opinions and Philosophy

Sum; estis; sunt

(I am; you are; they are)

 

 

What in the World am I doing here?

'Once in a while, I'm standing here, doing something.  And I think, "What in the world am I doing here?" It's a big surprise'
-   Donald Rumsfeld US Secretary of Defence - May 16, 2001, interview with the New York Times

As far as we know humans are the only species on Earth that asks this question. And we have apparently been asking it for a good part of the last 100,000 years.

Read more ...

Terms of Use                                           Copyright