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As the World Bank and India finally agree terms on a $1bn loan to clean up the Ganges, a team of experts who have spearheaded a remarkable transformation in the River Thames are to try and do the same to India's iconic river.

In 1957, London's river was declared biologically dead - today it is one of Europe's healthiest waterways.

This revitalisation has not been seen in the Ganges - a sacred place for Hindus - but among the most polluted rivers in the world.

This week on One Planet, we come from the banks of the Thames and the Ganges to explore what one river can teach the other - and ask the World Bank why this clear up operation will be different from the other previous attempts which have failed.

As ever, tune in, have a listen and then let us know what you think, email the team at oneplanet@bbc.com, or join us on Facebook, the link's below.