Houses under construction. © John Hogg/World Bank [[tweetable]]Affordable housing is a major challenge across West Africa, where fewer than 7 percent of households can afford to buy their own home…

Martin Spicer |

También disponible en español e português It’s tempting to think that this is just another Earth Day – after all, it has been celebrated since 1970. But perhaps this year should be different, at…

Karin Erika Kemper |