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In Los Angeles Susan Marling speaks to Frank Gehry. The famous architect has been charged with creating a master plan for the improvement of the Los Angeles River. It is a tough job. Since the 1930s when the river was straightened and lined with concrete to mitigate flooding, the waterway has been a hidden, polluted channel that many Angelenos did not even know existed.

But now the money and the political will (we speak to mayor of LA, Eric Garcetti) are in place to \\u2018green\\u2019 the river, create parks, continue the development of cycle paths and to spark a swathe of new housing and connections between neighbourhoods. The big question is whether this can be done without displacing the poorer people and the small businesses who currently live and work close to the river. And if LA becomes host of the 2024 summer Olympics, will it have a new clean river to show the world?

Producer: Victoria Ferran

(Photo: The Los Angeles River)