Guardian: The majority of the 9 billion people on Earth will live with severe pressure on fresh water within the space of two generations as climate change, pollution and over-use of resources take their toll, 500 scientists have warned.
The world's water systems would soon reach a tipping point that "could trigger irreversible change with potentially catastrophic consequences," more than 500 water experts warned on Friday as they called on governments to start conserving the vital resource. They said it...