The sound overlays abstract shots of water, rivers and sea, until urban congestion is wholly wiped away by Mediterranean tranquillity.

ECONOMIST: All that glitters

Timber-cutting was blamed for a while, but most commercial tree farms have more fish in their rivers than in those of urban areas.

ECONOMIST: Cities and the environment

We are working hard to persuade planners and developers to use sustainable urban drainage systems, which collect and treat urban run-off before it reaches rivers.

BBC: English and Welsh rivers 'improving'

The steps get heavier and the speed increases until listeners are drawn into the movement of the rivers and the mills, the frenetic pace of an urban center in constant motion.

NPR: Time For Three: Beyond Classical

However, both are now seriously threatened by deforestation and invasive practices, including intensive mining and logging, extensive livestock activity, water pollution, degradation of headwaters, unregulated processes of urban settlement, construction of roads, waterways and dams, drainage and diversion of rivers, burning of forests and illegal fishing and trade in wildlife.

UNESCO: Intangible Cultural Heritage