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 Tours Gateway Arch with Sec. LaHood, Sen. McCaskill
Office of the Secretary
Last edited 4/25/2016
ST. LOUIS, Mo. -- Secretary of the Interior Ken Salazar today toured the Jefferson National Expansion Memorial, along with Secretary of Transportation Ray LaHood and Senator Claire McCaskill. Secretary Salazar, Secretary LaHood and Senator McCaskill reviewed the winning design concept to revitalize the park and met with stakeholders to discuss pending refinements and implementation of the plan.
“The winning design concept fulfills the dream of the Gateway Arch's original designer Eero Saarinen to create one great park on both banks of the Mississippi River,” Salazar said. “We will work hard with other federal agencies and partners to complete the design by 2015, the 50th anniversary of the Arch.”
Michael Van Valkenburgh Associates of New York was the winner of the design competition for the renovation of the park.
The winning concept calls for a landscaped “lid” over the depressed lanes of Interstate 70 between the Gateway Arch grounds and downtown; an expanded underground museum and new entrance on Memorial Drive; improvements to the city owned riverfront levee; and expanded programming and amenities on the Gateway Arch grounds and in East St. Louis.
Salazar said that the project complements the goal of President Obama's America's Great Outdoors Initiative to expand opportunities for Americans to enjoy outdoor recreation.
“We hope that the Jefferson National Expansion Memorial will become a model of how urban parks can provide opportunities for outdoor recreation and invite more people to fully enjoy our nation's natural beauty, culture and history,” Salazar said.