
A study published today says the rise in demand for air travel is one of the most serious environmental threats facing the world.
The Univeristy of York, who conducted the study, warns that the UK Government, along with other governments in the EU, has made a massive commitment to expand aviation.
The authors of the report, Professor John Whitelegg and Howard Cambridge, say polluting gases from aircraft exhaust fumes are on the increase and that airlines should pay an environmental charge equal to the damage.
The BBC website has further information.