Jul 21, 2011
Many countries are facing dangerous water shortages. As world demand for food has soared, millions of farmers have drilled too many irrigation wells in efforts to expand their harvests. As a result, water tables are falling and wells are going dry in some 20 countries containing half the world’s people. The...
Jul 21, 2011
Our inefficient, carbon-based energy economy threatens to
irreversibly disrupt the Earth’s climate. Averting dangerous
climate change and the resultant crop-shrinking heat waves,
more-destructive storms, accelerated sea level rise, and waves of
climate refugees means cutting carbon emissions 80
percent by 2020.
The...