This week we look at how food is produced sustainably in Berlin, why birds are important for the ecosystems in cities and hear from a pioneering architect in India.
Young people in Mumbai are taking action to protect the city's vanishing mangrove forests. The trees, a vital flood defense, help protect millions of vulnerable people on India's coast from rising sea levels.
Beautiful, fragrant, alive may not be words immediately associated with sewage. That's where the Living Machine comes in. The waste water treatment system created in Scotland is now spreading around the world.
Politicians in Germany have bowed to French pressure to cut down trees in Berlin. The trees, which blocked a sculpture given to the city by France, are doomed. Is this what it takes for good neighborly relations?
Created in a grassroots effort by local residents, a biodiversity park near India's capital New Delhi serves as a green haven for people and wildlife. Now authorities want to build a six-lane highway across it.
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