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.
Trustees Release Final Restoration Plan for Nyanza Chemical Waste Dump NPL Site in Ashland, Middlesex County, Massachusetts
Last edited 2/14/2017
Restoration of native wild rice (Zizania aquatica), shown here along the Sudbury River in eastern Massachusetts, will be undertaken after controlling invasive aquatic vegetation. Native wild rice provides an important food source for migratory waterfowl and other birds in the Sudbury River watershed. Photo credit: Ron McAdow, Sudbury Valley Trustees.
On September 4, 2012, the federal and State natural resource trustees released the final, publicly-reviewed “Restoration Plan and Environmental Assessment for the Nyanza Chemical Waste Dump Superfund Site.” This Restoration Plan details actions to be undertaken to by the natural resource trustees to restore natural resources and natural resource services injured by hazardous substances releases at the Nyanza Chemical Waste Dump NPL site in Ashland, Middlesex County, in the MetroWest area of eastern Massachusetts.
The natural resource trustees in this case include:
Commonwealth of Massachusetts, represented by Massachusetts Executive Office of Energy and Environmental Affairs and Massachusetts Department of Environmental Protection;
U.S. Department of Commerce, represented by National Oceanic and Atmospheric Administration; and,
U.S. Department of the Interior, represented by U.S. Fish and Wildlife Service.
The Nyanza Chemical Waste Dump is a 35-acre site located adjacent to an active industrial complex. Historical industrial operations at the site from 1917 to 1978 released large volumes of wastewater contaminated with acids, organic chemicals and inorganic chemicals. Of particular concern among the released hazardous substances is the chromium and mercury that were used as catalysts in the production of textile dyes. Over 45,000 tons of chemical sludges, together with spent solvents and other chemical wastes, were buried on the site. Some of these wastes were discharged to the Sudbury River. As a result, groundwater, soils, sediments and surface waters are contaminated with heavy metals and chlorinated organic compounds. The U.S. Environmental Protection Agency placed the Nyanza Chemical Waste Dump on the National Priorities List in 1983.
These hazardous substances releases from the site injured natural resources and natural resource services. In 1998, the trustees settled natural resource damage claims for more than $3 million: $2.8 million for restoration projects and $230,769 to the Commonwealth for groundwater injuries. Interest earned on these settlement funds since then has increased the total amount of funding for restoration activities to almost $3.7 million.
This final Restoration Plan selects 11 preferred projects to restore injured natural resources and natural resource services. Together, these projects are intended to accomplish restoration in the Sudbury River watershed by:
restoring migratory and coldwater fish habitat;
protecting land to conserve wildlife habitat;
creating public access to the Sudbury River;
creating a nature preserve in Framingham and Ashland; and,
controlling invasive aquatic weeds to improve recreation, wildlife habitats and diversity.
Implementation of the restoration projects will begin soon.