Australian Broadcasting Corporation: HALF A BILLION more people will be unable to access clean water as a result of climate change, according to a new international study. Approximately 1.3 billion people today live in areas of water scarcity. A increase in temperature of 2°C by 2100 a midrange prediction from the Intergovernmental Panel on Climate Change is expected to expose an additional eight per cent of the world's population to new or worsening water scarcity. A more extreme rise in temperature of five degrees, reveals that...