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.
DOINews: U.S. Fish and Wildlife Service Partners with State of Indiana and US EPA to Restore the Grand Calumet River
Last edited 4/25/2016
Great egret (Ardea alba) using a section of the West Branch of the Grand Calumet River in Hammond, IN. after remediation of contaminated sediments and restoration. FWS photo.
The first phase of the restoration of the West Branch of the Grand Calumet River is complete with the support of $11.6 million from the Natural Resource Trustees. Natural resource damage assessment and restoration (NRDAR) settlement funds were provided as the local cost share to facilitate the use of $21.5 million of Great Lakes Legacy Act funding. The $33 million project has been undertaken to remove and cap heavily contaminated sediment (mud) along a stretch of the river in Hammond, Ind. Native grasses, flowers, trees and shrubs have also been planted along riverbanks and upland areas to restore the river shoreline.
The Trustees are comprised of the Indiana Department of Environmental Management, Indiana Department of Natural Resources and the U.S. Fish and Wildlife Service. Through NRDAR, trustee agencies assess the injury or harm to natural resources entrusted to them. Legal settlements are negotiated or other legal actions are taken against the responsible parties for the spill or release of contaminated materials. Funds from these settlements are then used to restore the injured resources.
The Great Lakes Legacy Act provides federal money that along with local matching dollars are used to clean up polluted sediment along the shores and waterways of the Great Lakes. The U.S. Environmental Protection Agency administers the funding for the Legacy Act. Over the decades, a number of factories, refineries, and other manufacturing facilities have released oil and pollutants into the Grand Calumet River. The river originates in the east end of Gary, Ind., and flows 13 miles through the cities of Gary, East Chicago and Hammond, Ind. This is a very unique region. It is one of the most industrialized areas in the country as well as home to some of the most diverse native plant and animal communities in the Great Lakes Basin.
The West Branch of the Grand Calumet River work calls for the removal of about 92,000 cubic yards of polluted sediment along a one-mile stretch of the river. The removal of the sediment will be followed by the placement of a cap over the dredged area. The sediment contains pollutants such as PCBs and PAHs (polychlorinated biphenyls and polycyclic aromatic hydrocarbons), heavy metals, and pesticides.
Upland restoration activities near the Grand Calumet River have been under way for many years, including protection and restoration of rare habitats such as dune and swale and native prairies. The project area is part of a larger Chicago/Northwest Indiana Corridor where a restoration plan is in place. The sediment cleanup and shoreline restoration will complement the habitat restoration efforts.