After water, concrete is the substance most widely consumed by humans. This ubiquitous substance is highly polluting but a German firm has developed a way of recycling old concrete.
On this week's eco@africa, we meet Nigerians striving for sustainability, German farmers using ancient Amazonian techniques, and Ugandan school children getting green-fingered with urban farming projects at school.
Mumbai's beaches are covered in trash. While most people just complain, one man has set out to change that - and kicked off the largest beach clean-up project in the world.
On this week's eco@africa, we see how climate change can promote democracy, find a good use for coffee grounds and visit an architect who is reviving an ancient African construction technique. All this and more!
Until recently, Angela Merkel was known as the "climate chancellor" and Germany had a squeaky-green image. But now it looks like the country will miss the goals it pledged in Paris. Could a future government change that?
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