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Unisféra International Centre - MAI 2003 - The Economic and Environmental Impacts of Agricultural Subsidies: An Assessment of th. Amer. J. Agr. Econ. 84(4) (November 2002): 902–915 EFFECTIVE COSTS AND CHEMICAL USE IN UNITED STATES AGRICULTURAL PRODUCTION: US. Catherine J.

Amer. J. Agr. Econ. 84(4) (November 2002): 902–915 EFFECTIVE COSTS AND CHEMICAL USE IN UNITED STATES AGRICULTURAL PRODUCTION: USING THE ENVIRONMENT AS A “FREE” INPUT – guatemalt

Morrison Paul, professor in the the Department of Agricultural and Resource Economics and a member of the Giannini Foundation, V.

Amer. J. Agr. Econ. 84(4) (November 2002): 902–915 EFFECTIVE COSTS AND CHEMICAL USE IN UNITED STATES AGRICULTURAL PRODUCTION: US

Eldon Ball, senior economist with the Economic Research Service, Ronald G. Felthoven, economist with the National Marine Fisheries Service, Arthur Grube, economist, with the Economic Research Service and Richard F. Nehring, economist, with the Economic Research Service + Author Affiliations Received June 1, 2000. A cost-function-based production model is used to represent patterns of input use and output production in U.S. agriculture, and the implied costs of induced reductions in risk from agricultural chemicals (“bad outputs”).

Key wordsJEL classification Copyright 2002 American Agricultural Economics Association. CHOICES - 2007 - Theme Overview: Agriculture and Water Quality in the Cornbelt: Overview of Issues and Approaches. More than three decades have elapsed since the passage of the Federal Water Pollution Control Act with its stated goal of zero discharge of pollutants into the nation's waterways.

CHOICES - 2007 - Theme Overview: Agriculture and Water Quality in the Cornbelt: Overview of Issues and Approaches

Yet, water quality remains poor in many locations and considerable loading of pollutants continues. This is particularly true for agricultural sources of water pollution and is typified by the Upper Mississippi River Basin, where more than 1,200 water bodies appear on the current U.S. Environmental Protection Agency (EPA) listing of impaired waterways. Additionally, nitrate export from this region has been implicated as a significant cause of the hypoxic zone in the Gulf of Mexico, which covered nearly 20,000 km2 in 1999 and more than 17,000 km2 in 2006 ( gov/gmpo/nutrient/hypoxia_pressrelease.html). The final paper in the set addresses a different water quality issue: drinking water and nitrate levels. OCDE - 2010 - États-Unis : effets de l'agriculture sur l'environnement et enchères de conservation. West Virginia University - 2002 - Environmental Impacts of Agricultural Trade Under NAFTA.

WIKIPEDIA - Environment of the United States. Biota[edit] Bioregions of North America, according to one scheme.

WIKIPEDIA - Environment of the United States.

Animals[edit] More than 400 mammal, 700 bird, 500 reptile and amphibian, and 90,000 insect species have been documented.[1] Wetlands such as the Florida Everglades are the base for much of this diversity. Fungi[edit] Around 14,000 species of fungi were listed by Farr, Bills, Chamuris and Rossman in 1989.[2] Still, this list only included terrestrial species. Plants[edit] With habitats ranging from tropical to Arctic, U.S. plant life is very diverse. Human impacts on biota[edit] The country's ecosystems include thousands of nonnative exotic species that often harm indigenous communities of living things. Climate[edit] Climate zones of the lower 48 United States.

The U.S. climate is temperate in most areas, tropical in Hawaii and southern Florida, polar in Alaska, semiarid in the Great Plains west of the 100th meridian, Mediterranean in coastal California and arid in the Great Basin. Geology[edit] Environmental issues[edit] Ciência & Saúde Coletiva, 11(2):439-451, 2006 Integrated assessment of environment and health: America’s children and the enviro. EPA - Laws and Regulations. Le site de l'Environmental Health Perspectives. UNITED NATIONS ENVIRONMENT PROGRAMME (UNEP) - State environment of America. UNITED NATIONS ENVIRONMENT PROGRAMME - A Thirty-Year State of the Environment and Policy Retrospective - North America's Environ.

Focusing on UNEP’s North American region, comprised of Canada and the United States, this report provides an integrated analysis of the state of resource assets and 30–year trends in nine major themes:

UNITED NATIONS ENVIRONMENT PROGRAMME - A Thirty-Year State of the Environment and Policy Retrospective - North America's Environ

EPA - Toxics Release Inventory (TRI) Program. EPA Home TRI Home TRI is a database containing data on disposal or other releases of over 650 toxic chemicals from thousands of U.S. facilities and information about how facilities manage those chemicals through recycling, energy recovery, and treatment.

EPA - Toxics Release Inventory (TRI) Program

One of TRI's primary purposes is to inform communities about toxic chemical releases to the environment. Announcing the TRI University Engagement Initiative The TRI Program has launched a new initiative focused on developing sustained, mutually-beneficial relationships with colleges and universities. The 2011 TRI Preliminary Dataset is Now Available The 2011 TRI preliminary dataset contains the most current TRI data available and reflects toxic chemical releases and pollution prevention activities that occurred at TRI facilities during the 2011 calendar year.

SCORECARD - POLLUTION LOCATOR. Over 4 billion pounds of toxic chemicals are released by industry into the nation's environment each year, including 72 million pounds of recognized carcinogens.

SCORECARD - POLLUTION LOCATOR

Scorecard can give you a detailed report on chemicals being released from any of 20,000 industrial facilities, or a summary report for any area in the country. Scorecard spotlights the top polluters in the U.S., and ranks states and counties by pollutant releases. Provide your zipcode to get a report for your community, or use the Pollution Locator to search for reports on specific areas.

To zoom in to your state's report, click on the map below. United States Environmental Release Reports Available at This Level View National Report. National Center for Health Statistics. THE WHITE HOUSE - page environment. USDA - Natural Resources and Environment. EPA - 2008 - Report on the Environment.

US Environmental Protection Agency.