Mercury's surface in "enhanced color," a color scheme created to emphasize color differences. This is not what Mercury would look like to the human eye, but by applying mathematical analysis to images, color differences can be accentuated beyond those visible to a person.
Mount Rushmore National Memorial under construction.
The workers had to endure conditions that varied from blazing hot to bitterly cold and windy. Each day they climbed 700 stairs to the top of the mountain to punch-in on the time clock. Then 3/8 inch thick steel cables lowered them over the front of the 500-foot face of the mountain in a "bosun chair." Despite the dangers, no one was killed during the project.
Otters in Glacier Bay National Park and Preserve, Alaska.
The sea otter population of Glacier Bay has increased dramatically in the past 20 years. Ecologists consider sea otters a keystone species here. Otters consume vast quantities of clams, urchins, crabs, and other invertebrates and their presence creates ripples through the ecosystem. NPS photo.
Every day someone like you becomes a wildland wildfire fighter, a teacher, a trail-builder, a museum curator, or a park ranger. Discover your opportunities in national parks. Come to play. Come to learn. Come to serve. Develop your environmental leadership skills. Find a job. Be the next generation to preserve and protect these great places.
With more than 80% of Americans living in urban areas, urban parks are more important than ever. The father of American landscape architecture, Frederick Law Olmsted, said of urban parks:
It is one great purpose of the Park to supply to the hundreds of thousands of tired workers, who have no opportunity to spend their summers in the country, a specimen of God's handiwork that shall be to them, inexpensively, what a month or two in the White Mountains or the Adirondacks is, at great cost, to those in easier circumstances.
EBSCO Online includes, among others, the Environment Complete database, with full text for more than 920 journals, and indexing for 2,200 domestic and international periodicals going back to 1888 (including over 1,350 active titles), as well as more than 190 books.
Water: Science and Issues The link will open the Gale Virtual Reference Library. Water: Science and Issues can be found under the 'Environment' tab.
Other titles related to water in the Gale Virtual Reference Library include:
Water Resources Collections and Archives A collaboration of the University of California, Riverside, and the California State University, San Bernardino Libraries, it collects contemporary and historic materials on all aspects of water resources.
Stream Notes Produced quarterly by the Stream Systems Technology Center, of the USDA Forest Service, Fort Collins, Colorado
Surf Your Watershed Makes information available by geographic unit, which includes state, watershed (Surf's primary focus), county, metro area, and tribe. Sponsored by the U.S. Environmental Protection Agency.
ToxMap "Environmental health e-maps" presented by the National Library of Medicine. Data sources include the EPA's Toxics Release Inventory and the Superfund program.
Utah Water Atlas Developed by the Utah Water Research Laboratory, Utah State University. Now archived, but contains valuable historical information.
The Watershed Academy The Watershed Academy is a focal point in EPA's Office of Water for providing training and information on implementing watershed approaches.
WaterWorld "The resource for the municipal water/wastewater industries"
Western Waters Digital Library Contains government reports, classic water literature, legal transcripts, water project records, personal papers, photographic collections, and video materials about the Columbia, Colorado, Platte, and Rio Grande river basins.
Impaired Waters and Total Maximum Daily Loads Produced by the Environmental Protection Agency. Total Maximum Daily Load is a calculation of the maximum amount of a pollutant that a waterbody can receive and still meet water quality standards.
The United States Geological Survey has collected water-resources data at approximately 1.5 million sites across the United States, Puerto Rico, and Guam. Surface-water data, such as gage height (stage) and streamflow (discharge), are collected at major rivers, lakes, and reservoirs. Ground-water data, such as water level, are collected at wells and springs.
Water-quality data are available for both surface water and ground water. Examples of water-quality data collected are temperature, specific conductance, pH, nutrients, pesticides, and volatile organic compounds. This web site serves current and historical data. Data are retrieved by category of data, such as surface water, ground water, or water quality, and by geographic area.
Projects and Facilities Database The U.S. Bureau of Reclamation's portal for information on dams, powerplants and projects. Reclamation projects, substantially complete and in operation, are reviewed in detail with considerable attention to history, costs, beneficiaries, engineering, water data, and productivity.
U.S. Drought Portal The U.S. Drought Portal is part of the National Drought Policy Commission's efforts to disseminate information on anticipated droughts and drought risk management. The site includes maps, data tools, events, news, graphs, and educational resources for primary and secondary school students and above.
National Institutes for Water Resources Nationwide network of water research institutes. Includes links to Water Resources Research Institutes. A Water Resources Research Institute is located in each State, the District of Colombia, and the U.S. Territories of the U.S. Virgin Islands, Puerto Rico, and Guam, for a total of 54 institutes. The Guam Institute also serves the Federated States of Micronesia and the Commonwealth of the Northern Mariana Islands. The Hawaii Institute also serves American Samoa.
Water Quality Information Center of the National Agricultural Library. The center collects, organizes, and communicates the scientific findings, educational methodologies, and public policy issues related to water quality and agriculture.
The Law of the Colorado River The Colorado River is managed and operated under numerous compacts, federal laws, court decisions and decrees, contracts, and regulatory guidelines collectively known as the "Law of the River." Produced by the U.S. Bureau of Reclamation.
"An interactive water resources journal of water law, policy, and commentary," emphasizing Minnesota law. Also includes a section called WaterCourt, which is a summary of recent court decisions establishing water law in Minnesota and across the country.
Western Water Resource Issues A CRS Issue Brief for Congress, Oct. 18, 2006, by Betsy A. Cody and Pervaze A. Sheikh, Resources, Science, and Industry Division, Congressional Research Service
American Ground Water Trust Education organization that promotes opportunity, cooperation and action among individuals, groups and organizations in order to educate the public how best to benefit from and protect ground water.
Clean Water Action National citizens' organization working for clean, safe and affordable water.
Clean Water Network Alliance of more than 1,000 organizations that promotes the National Agenda for Clean Water.
Coastal & Estuarine Research Federation Multidisciplinary organization of individuals who study and manage the structure and functions of estuaries and the effects of human activities on these fragile environments.