Kuala Lumpur follows efforts in Seoul and Vancouver in effort to revive its toxic rivers
In the hills to the east of Kuala Lumpur, the Klang River is clean enough for visitors to play in. But just a few hundred metres downstream, the water darkens and rubbish clogs the banks.
By the time it reaches the city centre, the river is the pale brown of milky tea and so toxic it's dangerous to touch.