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.
Interior Secretary Ken Salazar Joins Partners At Celebration of Transformation of Rocky Mountain Arsenal
Office of the Secretary
Completion of Refuge, End of All Fieldwork Signal Vision Fulfilled
Last edited 4/25/2016
COMMERCE CITY, CO – Secretary of the Interior Ken Salazar today joined officials from the U.S. Army and Shell Oil Co. to celebrate the transformation of the Rocky Mountain Arsenal into a premier urban national wildlife refuge.
The event officially marked the end of all major environmental cleanup work at the site and the formal transfer of 2,500 acres of land from the Army to the U.S. Fish and Wildlife Service, bringing the Rocky Mountain Arsenal National Wildlife Refuge to its final size of more than 15,000 acres.
“With the successful completion of the vision to create a premier urban national wildlife refuge, a new chapter now begins,” Secretary Salazar said. “I commend the hard work by so many partners that led to this great achievement.. This vital natural resource will provide a permanent safe haven for wildlife and offer many opportunities for people from all walks of life, especially our youth, to connect with nature in a great urban park.”
For more than a decade, the Army, Shell and the U.S. Fish and Wildlife Service have worked cooperatively with EPA, the Colorado Department of Public Health and the Environment and Tri-County Health Department to complete a comprehensive environmental cleanup of the Arsenal. All fieldwork will conclude this fall, coming in under budget and a year ahead of schedule. The total cost of the environmental cleanup is $2.1 billion.
"The Army is proud to have completed its mission at the Arsenal by transitioning land that was once used to protect and preserve our freedom into one of the largest urban national wildlife refuges in the country," said Hew Wolfe, deputy assistant secretary of the Army for environment, safety and occupational health. “As we approach the conclusion of the environmental cleanup program, which has surpassed the highest environmental and safety standards, we would like to thank our partners, the community, and the citizens of Colorado. Together, we have created a conservation asset for countless generations to enjoy.”
"I congratulate the U.S. Army and U.S. Fish and Wildlife Service for their accomplishments here at the Arsenal and thank the community for its support in helping us realize this goal," said Ray Collins, global divestments manager for Shell Chemical Co. "Shell is proud to be a part of this productive partnership, which former Defense Secretary William Cohen called a 'national model' of cooperation among the public and private sectors."
The Arsenal, approximately 10 miles northeast of downtown Denver, is one of the largest environmental cleanup sites in the country. In 1942, RMA was built to manufacture chemical weapons to be used in World War II as a war deterrent.
Following the war, the Army leased some of the facilities to private industry, including Shell Oil Co., for the production of agricultural chemicals.
The Arsenal later became a site for munition demilitarization programs. All manufacturing stopped in the mid 1980s, and the site's sole mission became environmental remediation and restoration. In 1987, the Arsenal was listed on EPA's Superfund National Priorities List.
Rocky Mountain Arsenal National Wildlife Refuge was formally established in April 2004 and doubled in size in 2007 with another land transfer from the Army to the U.S. Fish and Wildlife Service.
The final significant land transfer makes the site one of America's premier urban wildlife refuges and a high-profile, dynamic resource located in the heart of the rapidly-growing metropolitan Denver region. The site provides sanctuary for more than 330 species of wildlife, including bison, deer, coyotes, bald eagles, and burrowing owls.