A quarter of the population of developing countries still live on less than $1.25 a day. One billion people lack clean drinking water, 1.6 billion lack electricity. Yet these are the people who will bear some 75 to 80 percent of the costs of damage caused by the changing climate. Higher temperatures, changes in precipitation patterns, rising sea levels, and more frequent weather-related disasters all pose risks for agriculture, food, and water supplies in the developing world. Features Norman Gillespie from UNICEF Australia, Milina Battaglini from the World Bank, and Martijn Wilder from Baker and McKenzie.