JONATHON PORRITT, author of The World We Made, joined the Green Party four decades ago. At that time the party keenly debated population growth, and the impact this would have on the environment. Today, Porritt argues, the referendum and anxiety around immigration means progressives still need to discuss this hotly contested issue.
One billion people could have been forced out of their homes by 2050 as a result of the pressures of climate change, a new report by development charity Christian Aid says.