Guardian: British couples should consider having no more than two children to help reduce the environmental impact of the rising global population, doctors have said. An editorial in the British Medical Journal today calls on GPs to encourage the view that bigger families are as environmentally dubious as owning a patio heater or driving a gas-guzzler. Writing in the journal, John Guillebaud, professor of family planning at University College, London and Pip Hayes, a GP based in Exeter, …