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.
Salazar Informs President, Cabinet that Interior Department Is Moving Quickly on Economic Recovery Projects in National Parks
Last edited 4/25/2016
WASHINGTON, D.C. – Secretary of the Interior Ken Salazar today informed President Obama and the Cabinet that the National Park Service will begin economic recovery projects at 107 national parks in next 100 days, creating new jobs and stimulating local economies while making parks better places for Americans to visit.
“We are moving full speed ahead to put Americans to work on vital projects at parks across the country,” Salazar said at a Cabinet meeting held Monday. “We are providing good jobs while preserving our national treasures and benefiting the 147 million people who visit these each year.”
The projects being undertaken by the National Park Service projects will preserve and protect national icons and historic landscapes, improve energy efficiency and renewable energy use, and remediate abandoned mine lands, Salazar said. They will also encourage the participation of young adults in their national parks.
The projects fall under six basic types of activities: construction, deferred maintenance, energy efficient equipment replacement, trails, abandoned land mines, road maintenance, and road maintenance.
Construction projects will build, rehabilitate, or replace facilities to help preserve natural and cultural resources and ensure safe, fun, and educational experiences for visitors.
Deferred maintenance projects will repair, rehabilitate, or maintain critical facilities to extend their useful life. The park service will undertake major repair and rehabilitation work and will complete cyclic maintenance to prevent an increase in the maintenance backlog.
Energy efficient equipment replacement efforts will replace aging vehicles, heavy equipment, and air-conditioning systems with next-generation energy efficient equipment.
Trails projects will complete work to restore trails for safer use and to extend the life of trails across the national park system. In addition, trail work will provide opportunities for youth and young adults to participate in meaningful experiences on public lands and to contribute to the park service mission.
The abandoned mine lands safety projects will remedy serious health and safety concerns at the sites. A consideration in choosing a particular remedy is the ability to provide continued use of the mine openings as wildlife habitat by maintaining access and airflow.
Road maintenance projects will preserve park roads and parkways and rehabilitate deteriorated road networks. The park service is responsible for approximately 5,450 paved miles of public park roads, 6,544 miles of unpaved roads, the equivalent of 948 paved miles of parking areas, and 1,679 structures such as bridges, culverts, and tunnels.