The dark ribbon curls down a dirt embankment and flows into the Ganges River. "That's toxic runoff," says Rakesh Jaiswal, a 48-year-old environmental activist, as he leads me along the refuse ...

The Ganges river in India is more than 2,500km long and has the most populated river basin in the world. Hundreds of millions of people and a huge range of wildlife rely on the river Ganges. But ...

Locally known as Sihu, this marks the first recorded presence of the species in the river since 1998, ending a 25-year absence. The prolonged disappearance of the Ganges dolphin from this waterway ...