st The solar desalination workshop for the 21 century was sponsored by
NATO program Security Through Science. In a great number of countries
water scarcity, coupled with a significant growth in population
especially in developing countries, poses the serious problem of
supplying fresh water. The countries affected by water scarcity are
found in the African, Asian, European and American continents, and also
are on the southern and eastern coasts of the Mediterranean Sea. Severe
drought usually generates a general malaise in populations which are
already affected by a number of social and poverty problems, which often
lead to significant and uncontrolled emigration towards richer
countries, especially if one takes into account the increasing economic
and lifestyle gap between north and south Mediterranean countries.
Emigration could be contained if basic life needs were guaranteed to the
population in their homelands, particularly potable water supply.
Abundant solar energy combined with desalination could provide a
sustainable source of potable water, but unfortunately, the optimum
configuration for solar desalination that would provide inexpensive
fresh water is difficult to reach. Further exhaustive research, field
developments, and proper mobilization and coordination of funding,
research and development is needed to achieve this goal.