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.
AMERICA'S GREAT OUTDOORS: Best Beaches Belong to all Americans, Generate Billions for Local Economies
Photos for “National Oceans Month” Available
WASHINGTON, DC— Secretary of the Interior Ken Salazar today observed World Oceans Day and National Oceans Month by showcasing some of the economic benefits from the beaches in our national parks, seashores, lakeshores and wildlife refuges – beaches that belong to all Americans.
“From coast to coast, our national beaches generate billions in economic activity and support tens of thousands of jobs through outdoor recreation and tourism,” said Salazar. “America's oceans and beaches are national treasures, and Interior is committed to helping implement President Obama's National Ocean Policy to help ensure that these vital resources are healthy and resilient.”
The Department of the Interior manages more than 35,000 miles of coastline, including 85 marine and coastal parks administered by the National Park Service;180 marine and coastal wildlife refuges administered by the U.S. Fish and Wildlife Service; and 1,100 miles of coastline of the California Coastal National Monument administered by the Bureau of Land Management.
Coastal and marine national parklands contributed an estimated $3.5 billion to local economies in 2010. For more information on the economic contributions of all national parks, see the entire National Park Service report, which includes information on visitor spending by park and by state, online http://nature.nps.gov/socialscience/docs/NPSSystemEstimates2010.pdf.
Coastal wildlife refuges were estimated to contribute at least $900 million according to U.S. Fish and Wildlife Service data. Bureau of Land Management lands like the California Coastal National Monument provided additional boosts to tourism and local economies.