SciDev.Net: Water resources in three of South Asia’s largest river basins are highly vulnerable, with millions of people at risk of increasing water scarcity, a new report has found. The report — jointly released by the UN Environment Programme and the Asian Institute of Technology — studied the Ganges-Brahmaputra-Meghna (GBM), Indus and Helmand river basins, all of which span multiple countries within the region. It lists overexploitation, climate change, and inadequate distribution and …