POPULATION

Regional national population figures as well as current world population

The population figures for counties in the state of Georgia

For world population and world economic information
Also has UN social indicators DATA (including population by country and rate of growth)

AGRICULTURE

The U.S. Department of Agriculture website with lots of information on national and world agricultural production

The top wheat producing countries in the world

Wheat production by state

ENERGY

The Energy Information Agency of the U.S. Department of Energy

U.S. Department of energy homepage

General Coal information page 

World Coal production by country

World Oil production by country

AIR

Articles on air quality and other relevant air links

Maps of non-compliant areas. Also, Generates reports on air quality in various counties selected by state

MATHEMATICS

Ask Dr. Math at Swarthmore College 

Links on the derivative from Ask Dr. Math

OTHER IMPORTANT LINKS

Envirofacts Warehouse

Environmental Protection Agency Links

Environmental Impact Analysis Data Links