In December 1997 and more recently in December 2000, the Intergovernmental Panel on Climate Change (IPCC), a body of over 2000 international scientists, give us an idea of the present reality:
Mwezi Desemba 1977 na pia Desemba 2000 jopo la viongozi/watendaji wa Serikali kuhusu mabadiliko ya Hali ya Hewa (IPCC) ambacho hushirikisha wanasayansi wa kimataifa zaidi ya 2000, hufafanua kuhusu hali halisi iliyopo sasa hivi.