As the world becomes increasingly urbanized, the number of megacities is growing rapidly. Today there are 37 cities worldwide with populations of greater than 10 million, and 84 with populations…

Philip E. Karp, Peter Ellis, Barjor Mehta |

© Dominic Chavez/World Bank India’s state of Chhattisgarh faced a daunting challenge in the mid-2000s. About half of its public food distribution was leaked, meaning that it never reached the…

Ugo Gentilini, Harold Alderman, Ruslan Yemtsov |

Globally 2.9 million people died from household air pollution in 2015, caused by cooking over foul, smoky fires from solid fuels such as wood, charcoal, coal, animal dung, and agricultural crop…

Ernesto Sanchez-Triana, Bjorn Klavdy Larsen |