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Global warming refers to the phenomenon of the Earth becoming hotter.  This has been a topic of much interest and debate in recent years, both amongst scientists and within the general population. Scientists now agree that global warming is a reality. However, there is still a debate on the causes of this warming. Some have argued that changes in the Earth’s temperatures are normal and part of a pattern of the Earth having cooler and hotter cycles during its long history, but a growing number  of scientists now believe that human activity over the past 200 years has had a big effect on the Earth’s temperature.

Climate Change refers to the recent disruptions to the world’s climate -  new patterns of heat and cold, floods and droughts, for example. This is not about weather: weather describes local conditions of snow, rain, wind etc, and that, of course, can be very changeable. The fact that the UK has had two severe winters in a row with heavy snowfall does not mean that the British climate has changed. Neither does the fact that we get the occasional extremely hot summer, with temperatures over 30 degrees. These are localised weather conditions. However, if long freezing winters or  Mediterranean summers continue and become the norm over decades, then we might indeed be experiencing climate change.