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Science Presentations

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Over the years I have given presentations to various audiences, mainly U3A and Probus groups. For many of these presentations I have placed the images and text online, creating a separate document (in PDF format) for each talk. Each can be Viewed or Downloaded  completely free of charge just by clicking on the relevant icon below:

1. The Evolution of Our Universe - from the Big Bang to the present, including the appearance of life on Earth.   VIEW   DOWNLOAD
2. The Theory of Biological Evolution - presenting the wealth of evidence that supports the theory.    
3. Human Evolution - as determined by the latest fossil and genetic evidence.    
4. The DNA Revolution - the latest revolutionary advances in DNA research and gene editing, and the many ethical issues that result from them.    
5. Living in the Anthropocene - the ways in which humans have impacted the planet... an impact so profound that it warrants being labelled as a whole new geological era - the Anthropocene.     
6. Putting Alternative Medicine to the Test - why science uses the Clinical Trial to determine which medicines actually work, and how Alternative Medicine fares when subjected to this test.    
7. A Brief History of Astronomy - how different cultures have sought to measure and explain the movements of the heavens.    
8. Science Myths and Misconceptions - examining a range of commonly held science-based myths, identifying their possible origins and the reasons they persist in spite of contrary scientific evidence.    
9. The History of Time-Keeping Devices -  exploring the long history of attempts to measure the passing of time, from ancient sundials to atomic clocks, explaining how all of these different devices work.