Over a thousand large dams in India will be roughly 50 years old in 2025 and such aging structures across the world pose a growing threat, according to a UN report which notes that by 2050, most people on Earth will live downstream of tens of thousands of dams built in the 20th century.

A new UN report warns that without large new water-related investments many societies worldwide will soon confront rising desperation and conflicts over life's most essential resource.

A report from the UN and the CGIAR consortium reveals that land degradation due to salt build-up is causing damages in some 75 countries, estimated at more than US$27 billion per year.

The report is not formally mandated; rather it is an independent evidence-based analysis of how water can be addressed in a development agenda beyond 2015.

The GEF IW:Science synthesis report, brings together the findings and efforts of the IW System Type Working Groups (Groundwater, Lakes, Rivers, Land-based Pollution Sources and, Large Marine Ecosystems and the Open Ocean).