The time of writing of this introduction marks twenty years since former president FW de Klerk announced Nelson Mandela?s release and the effective acceleration of apartheid?s demise. South Africa was to see twenty years of unprecedented change, much...
effect? or ?natural greenhouse effect?, results in the average surface temperature being about +14?C. Without the greenhouse effect, life on Earth would be markedly different to that with which we are familiar. Two gases, CO2 and water vapour...