Temperature fluctuations are nothing new in the history of the Earth. Previous climate changes, however, happened so slowly that flora, fauna and humans had enough time to adapt to the new conditions. Today we are confronted with extremely rapid global warming. In the last 100 years average temperatures worldwide have increased by 0.75°C. Climate researchers have now issued warnings that we could be faced with a global temperature increase of up to 6.4°C by 2100. The consequences would be devastating – the extinction of plant and animal species; mass migration; growing competition for resources and, not least, declining standards of living.