Climate variability has been observed over a long period of time and is considered a natural process occurring on Earth. Climate change, however, is attributed directly or indirectly to human activity that alters the composition of the global atmosphere in addition to natural phenomena. Global...

Climate variability has been observed over a long period of time and is considered a natural process occurring on Earth. Climate change, however, is attributed directly or indirectly to human activity that alters the composition of the global atmosphere in addition to natural phenomena. Global...

Transport is one sector of the European economy in which CO<SUB align="right"><SMALL>2</SMALL></SUB> emissions are still growing, both because transport demand as a whole is growing and because the most carbon intensive modes – air and road transport – are growing fastest. The experience of Britain in the last decade shows that...</small></sub>