World Resources Institute: Some people say that water is the oil of the 21st Century. If only water were that simple.
Water is very complicated. Its affected by large-scale issues like climate change and globalization. International commerce moves virtual water (the water it takes to grow or produce a product) from farms in Brazil to grocery stores in China and Egypt.
But water is also inherently local, impacted by site-specific weather, geography, and other environmental and land use conditions. Managing and using...