Climatic Events that Changed the World

Climate change has significant impacts on many aspects of life and nature. Climate changes are long-lasting differences and changes in the temperature and weather, which represent a significant risk today. The sensitivity of societies to the simultaneous impacts of climate change on agriculture has been analysed on a global scale. Climate change can alter the conditions that sustain food production and availability, with cascading consequences for food security and global economies. Changes in the climate are a prelude to the occurrence of many disasters and extreme changes in the atmosphere.
(Prof. Dr. G. M. Monirul Alam) https://www.mdpi.com/journal/sustainability/special_issues/9530C3AOG2)

During a time when climate change is perceived as a threat to societies and obvious changes to weather patterns are occurring with increased frequency, it is instructive to look back at previous periods of severe climactic disruption to analyse what, if any, human response there was, and if there was a response, did it work?

We shall be looking at the 8.2k BP event (6200 BC), the desertification of the Sahara from about 4000 BC, the 4.2k BP event (2200 BC), and the so called 'collapse of the bronze age' about 1200 BC.

We shall see that, as technology progressed and societies evolved into ever more complicated structures, the effects of climate change, particularly the 8.2k BP, 4.2k BP and 1200 BC events became ever more catastrophic and more far reaching with longer lasting impact.

The analysis will leave us with a question. 'Have human societies progressed sufficiently and technology advanced far enough to allow the human race to survive in a form recognisable today, what in the not-so-distant future may be known as the 21st century AD event?'