I AM sure the protestors at the Heathrow Camp For Climate Action were well-intentioned, but few of them are experts and if you read what top scientists are saying the worst threat to the climate today is actually population growth.

Far from being the biggest contributor to the "greenhouse"

effect, aircraft are small beer compared to domestic residences.

It matters not one jot how many cheap flights you offer people, nor how many planes you put up into the air. There will be a catastrophic change in the global climate unless we all endeavour to have two or fewer children per family.

Aled Jones, Bridlington, East Yorkshire.