Photo: SkyPics Studio/Shutterstock Data on the sharing economy (Uber, Airbnb and so on) are scarce, but a recent study estimates that the revenue growth of these platforms has been dramatic. In…

Hernan Winkler |

Madagascar is big—it’s the fourth largest island in the world, more than twice as big as the United Kingdom. Madagascar’s size, its tropical climate, dense forests and steep hills, combined with a…

Charles Hurpy |

A waste collection site in Dar es Salaam,   Tanzania. Photo: Cecilia Paradi-Guilford Plastic waste, in particular PET, which is typically found in soda bottles, is becoming abundant in African…

Cecilia Paradi-Guilford, Scott Henry |

“Digitization” is a relatively niche topic in within information and communication technology (ICT), but the demand for “digitization” in the development field has grown significantly over the…

Kaoru Kimura |

Challenge participants at the Negawatt Weekend kickoff on March 14.Photo: Alison Roadburg As a rapidly urbanizing capital, Accra, Ghana has been experiencing increased economic activity, coupled…

Cecilia Paradi-Guilford |

The challenge gets underway at Nairobi's iHub. Photo: Anna Lerner/World Bank The Negawatt Challenge is is an open-innovation competition that will leverage a variety of cities’ rich …

Anna Lerner, Zhenia Viatchaninova Dalphond |