Blue and Green: Without large new water-related investments many societies will soon confront rising desperation and conflicts over lifes most essential resource, according to a new report published by the UN. Population increases and climate change are expected to put more people at risk of extreme water scarcity in the coming decades. One study suggested that without climate change mitigation policies, half of the world could be faced with extreme water scarcity by the end of the century. The latest UN report...