Interview with Kumi Naidoo, executive director of Greenpeace International
At Rio summit, African delegates are skeptical of the benefits
Some gains, plus commitments to future sustainable development talks
Tapping geothermal power in Kenya’s Rift Valley
Turbines generate hope for clean energy
Action needed to counter an “ecological catastrophe”
With new outlet, Korogocho residents push for reforms
Governments set course towards improving poor urban areas
Interview with UN-Habitat’s Joan Clos
