Half the world lives in urban areas, yet environmental concerns about megacities often focus on developing economies. But consumption is as important as population
It is just 50 years since the publication of Paul Ehrlich’s book The Population Bomb galvanised the global discussion on overpopulation. Published in 1968, his million-selling Malthusian polemic suggested that over-breeding poor countries were killing the planet. And it began in a megacity: India’s capital, Delhi.