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February 16, 2001

The following tables in Section 11. Global Climate have been updated:

Table 11.1  Global Emissions of Carbon Dioxide From Fossil-Fuel Burning, Cement Manufacture, and Gas Flaring, 1900-1997

Table 11.2  Global Emissions of Carbon Dioxide by Region, 1900-1996

February 15, 2001

Graphics for Section 2. Economy and the Environment have been added to the site. Click Here: Economy and Evironment Conditions and Trends.

February 10, 2001

Graphics for Section 4. Ecosystems and Biodiversity have been added to the site. Click Here: Biodiversity Conditions and Trends.

February 7, 2001

Graphics for Section 3. Public Lands and Recreation have been added to the site. Click Here: Public Lands and Recreation Conditions and Trends.

February 6, 2001

Graphics for Section 8. Pollution Prevention have been added to the site. Click Here: Pollution Prevention Conditions and Trends.

February 1, 2001

The following tables in Section 7. Terrestrial Resources have been updated:

Table 7.5  Cropland Tillage Practices Used in the Production of U.S. Field Crops, 1989-2000

Table 7.13  Timberland in the United States by Ownership, 1953-1997

Table 7.14  Annual Net Growth and Removals of U.S. Growing Stock, 1952-1996, and Volume of U.S. Growing Stock, 1953-1997

January 30, 2001

Graphics for Section 7. Terrestrial Resource have been added to the site. Click Here: Terrestrial Resources Conditions and Trends.

January 29, 2001

Graphics for Section 5. Air Quality have been added to the site. Click Here: Air Quality Conditions and Trends.

The following table in Section 5. Air Quality has been updated:

Table 5.8  U.S. Emissions of Greenhouse Gases by Gas, Based on Global Warming Potential, 1990-1999

January 26, 2001

Graphics for Section 9. Energy have been added to the site. Click Here: Energy Conditions and Trends.

January 25, 2001

Graphics for Section 10. Transportation have been added to the site. Click HERE: Transportation Conditions and Trends.

January 24, 2001

Graphics for Section 1. Population have been added to the site. Click Here: Population Conditions and Trends.

The following tables in Section 1. Population have been updated:

Table 1.1  U.S. Population and Population Growth Rate, 1900-2000

Table 1.3  Age Structure of the U.S. Population, Including Armed Forces Overseas, Ten-Year Intervals,1940-1990, and Annually, 1991-2000

Table 1.4  U.S. Population in Urban, Suburban, and Rural Areas, 1950-1999

January 23, 2001

Graphics for Section 6. Aquatic Resources have been added to the site. Click Here: Aquatic Resources Conditions and Trends.

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