The Ganges, or Ganga, is the lifeblood of the Indian subcontinent, feeding water to hundreds of millions of people.

But the river's future is under threat.

A UN climate report indicates that the Himalayan glaciers, which feed the Ganges, may disappear in 20 years.

Al Jazeera's Hamish Macdonald reports from the north Indian city of Varanasi.

Source: Al Jazeera