Madam, - The solution to the problem of air travel producing noxious emissions is not to curtail flying. It is to speed up the development of the one fuel that will produce no harmful emissions.
And what is this apparently magic substance? It is hydrogen, and it is an entirely feasible fuel. At present it costs too much to produce hydrogen in sufficient amounts to be practicable for fuelling transport. However, this will be a realistic option with the next generation of high-temperature nuclear reactors which are currently being developed.
Hydrogen is the transport fuel of the future - and there's plenty of it. - Yours, etc,
DAVID SOWBY, Knocksinna Crescent, Dublin 18.