This article, by Dr Benjamin Cook, a climate scientist at the NASA Goddard Institute for Space Studies and the Lamont-Doherty Earth Observatory, discusses the impact that climate change is having on global water supplies. Few areas of the world are completely immune to droughts and their often-devastating impacts on water resources, ecosystems and people.
As with other climate and weather extremes, such as storms and floods, these events have spurred strong interest in questions surrounding the impact of climate change. For example, is climate change making droughts more frequent or severe? And can we expect climate change to contribute to increased drought risk and severity in the future?