Edinburgh may be a relatively unpolluted city, but anyone who believes there is no pollution should take in the view from the Pentlands on a clear, still day and see the sulphurous yellow film over the city.
I agree with Mr McLeod that all transport pollutes to some extent, some forms more than others, and we all should continue to seek sensible ways to minimise this. No-one should listen to irresponsible voices who claim their personal transport usage has no impact and that they therefore have no personal responsibility for local and global pollution.
DAVID MORRIS
Colinton Road
Edinburgh