8 julio 2015
Thirsty cities, fields and livestock drink deeply from aquifers, natural sources of groundwater. But a study of three of the most-tapped aquifers in the United States shows that overdrawing from these resources could lead to difficult choices affecting not only domestic food security but also international markets.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/YTGjxVxFS_I/150708090836.htm
