SIR – It occurs to me the most immediate threat to the well-being of the communities of planet Earth is not the fact half the population desires to slaughter the other half, but rather the propensity of the more moderate population to bury its collective head in the sand, in particular with reference to world population explosion.

I despair when I hear ‘experts’ (eg on housing or wildlife) describing the measures they either advocate or are putting in place for when the population of Britain doubles.

The British countryside is doomed.

I am encouraged by having recently joined an organisation called Population Matters (populationmatters.org), among whose patrons are David Attenborough and Chris Packham. Perhaps some of yourreaders will consider joining?

Bernard Sunderland, Braithwaite Road, Keighley