Millions of liters of cooking oil end up in London's sewers every year, causing serious blockages. But a British company has found a way to turn these so-called "fatbergs" into energy.
On this week's eco@africa, we check out a host of renewable and energy-efficient projects, from charging mobile phones with solar energy in Kenya to making green biodiesel fuel out of 'fatbergs.'
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.
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