BBC: An award known as "the Nobel Prize for water" has been given to an Indian campaigner who has brought water to 1,000 villages.
The judges of the Stockholm Water Prize say his methods have also prevented floods, restored soil and rivers, and brought back wildlife.
The prize-winner, Rajendra Singh, is dubbed "the Water Man of India".
The judges say his technique is cheap, simple, and that his ideas should be followed worldwide.
Mr Singh uses a modern version of the ancient Indian technique...