Ghana's capital Accra has a reputation for pollution, Ghana's green energy gamble on 'poo-power',

Accra has been numbered among the world's most polluted places because of an unregulated dump that now forms part of a sprawling slum. And with no proper drainage or sewage system, the city's four million residents are also left to rely on a series of open sewers and polluted waterways. These drain the toxic sludge back into the sea. A lack of toilets and indiscriminate disposal of waste are partly to blame. In Paris, the UN is hosting a major conference seeking ways to limit climate change. But 6,500km away, in Accra, an enterprising team is taking these matters into its own hands - turning human excrement into cooking fuel. The BBC's Sammy Darko reveals a small scale scheme that has ambitions to go country-wide.COP 21 - the 21st session of the Conference of the Parties - will see more than 190 nations gather in Paris to discuss a possible new global agreement on climate change, aimed at reducing greenhouse gas emissions to avoid the threat of dangerous warming due to human activities.