FIGURE 6.8 Water for the future? A map of newly discovered fossil groundwater deep below the deserts in North Africa. This ancient water deposit, already tapped in Libya, is expensive to extract and is unlikely to meet future needs because it is not being replenished. Adapted from A. M. MacDonald et al., Environ. Res. Lett. 7 (2012), Fig. 2. © IOP Publishing Ltd; CP13/082 British Geological Survey © NERC 2011. All rights reserved. Boundaries of surficial geology of Africa, courtesy of the US Geological Survey; Country boundaries sourced from ArcWorld © 1995–2011 ESRI. All rights reserved.