Floating cities: The future or a washed-up idea?

Humans have a long history of living on water. Our water homes span the fishing villages in Southeast Asia, Peru and Bolivia to modern floating homes in Vancouver and Amsterdam. As our cities grapple with overcrowding and ...

Ivory Coast looks to solar vehicles to replace bush taxis

Hi-tech, cheap—and quiet. The Ivorian resort of Jacqueville just outside Abidjan is betting on solar-powered three-wheelers as it looks to replace traditional but noisy and dirty bush taxis.

China hopes 'eco-city' will prove a model alternative

At a construction site in northern China, a billboard boasts of a "liveable city" where residents can drink tap water, travel on clean energy public transport and enjoy acres of parkland.