That year, the UN General Assembly called for raising awareness about water and its threatened state on this date every year. The treaty they drafted amounts to a declaration of war on POPs. Three-quarters of the continent's drylands that are used for agriculture have already begun to lose productivity. Human activities often contribute to this process. Pressure upon the land is much greater today because 2 billion people inhabit drylands around the world.
Many Russian children face dangerously high levels of lead exposure.
Although the Russian government has long recognized this public health threat, only in the mid-1990s did the government develop major initiatives to monitor lead levels and reduce exposure. In an interview, Thomas Homer-Dixon, director of the Peace and Conflict Studies Program at the University of Toronto, talked about his model of the relationship between the scarcity of renewable resources such as water and soil and the outbreak of violent conflict within countries. United States Population Data Sheet PRB's popular United States Population Data Sheet, in a wallchart format, contains the latest population data for the United States and for all 50 states and the District of Columbia. This year's special focus is on the American work force. In an effort to redress racial injustice and institute sustainable management of scarce resources, South Africa has embarked on what may be the most progressive water policy in the world.