For users of water-based sanitation, most of us give little thought to what happens after we hear the sound of the toilet flushing. Wooooosh -- out of sight, out of mind. Certainly, there is…

Guy Hutton |

Conservation biology was baptized as an interdisciplinary problem science in 1978 at a University of California San Diego conference. But the conservation movement precedes this conference by at…

Valerie Hickey |

OUAGADOUGOU, Burkina Faso — I arrived in the Sahel on a four-country trip thinking of the trouble in the region: drought, hunger, and conflict. I left impressed by the political leadership and the…

Jim Yong Kim |

1 basin, 9 countries, 1 vision was in a brochure of one of the Council of Ministers meeting of the Niger Basin. The first time I saw that brochure I smiled as I right away thought about 9-1-1, the…

Amal Talbi |