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.
Secretary Salazar speaking to Army Corps of Engineers workers on the Tamiami Trail Bridge Project. Tami A. Heilemann-Office of Communications
Secretary Salazar receiving updates from the National Park Service and the Army Corps of Engineers on work to complete the Tamiami Trail Bridge Project. Tami A. Heilemann-Office of Communications
Secretary Salazar points to a map of Florida to explain how the Tamiami Trail Bridge Project will help restore historic water flows to the Everglades. Tami A. Heilemann-Office of Communications
Secretary Salazar speaking with Army Corp of Engineer workers in the Everglades. Tami A. Heilemann-Office of Communications
Last edited 7/30/2015
On Thursday, October 20, Secretary Salazar toured the Tamiami Trail Bridge Project site in Miami-Dade County, Florida where he received updates from the National Park Service and the Army Corps of Engineers on work to complete the one-mile bridge by 2013. Part of the largest construction project in the history of the National Park System, the bridge will help restore historic water flows to the Everglades. The increased water volumes and improved flow will re-establish seasonal water depths and flooding durations that are critical to the survival of many fish and wildlife species.