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.
HARTFORD, CT -- Secretary of the Interior Ken Salazar today joined Governor Dannel Malloy, Senator Richard Blumenthal, Congressman John B. Larson and Hartford Mayor Pedro Segarra in a tour of the Connecticut's Coltsville Historic District. During the visit, Secretary Salazar discussed ongoing efforts to establish a National Historical Park and noted the economic and job creating benefits of conservation, travel, tourism and outdoor recreation in local communities.
“Samuel and Elizabeth Colt played a pivotal role in America's Industrial Revolution when they established Coltsville, a first-of-its-kind industrial community that helped transform manufacturing in this county,” Salazar said. “Today, as a historical site that draws visitors from across the nation, Coltsville again promises to be an economic engine, producing jobs and spurring growth in the Hartford area."
Salazar noted that the nation's 394 national parks welcomed more than 281 million visitors last year who spent nearly $12 billion and supported 247,000 jobs. The Lowell National Historical Park in Massachusetts, another site that commemorates the industrial revolution in New England, drew 565,000 visitors in 2009 and supports more than 432 jobs in the local community.
Coltsville flourished during the Industrial Revolution, spurring innovation not only in the production of firearms but also with the development of technology that led to changes in the American way of life. Samuel Colt's revolver design, which eliminated the need to reload until five or six shots had been fired, made Colt Fire Arms Company a source of innovation in precision manufacturing and firearms design well into the 21st century.
Samuel Colt also worked with Samuel Morse in the development of the telegraph, and Colt manufacturing contributed to the development of new technology, inspiring the jet engine pioneers Francis Pratt and Amos Whitney, who served as apprentices with the company.
In recognition of its national and historical significance, the 260-acre Coltsville Historic District was designated a National Historic Landmark in 2008. Congressman Larson has joined with Senator Joe Lieberman and Senator Richard Blumenthal to introduce the “Coltsville National Historical Park Act” to make the site a new national park.
Later in the day, Salazar, Congressman Larson and Mayor Segarra also toured the riverfront area of downtown Hartford, highlighting the importance that rivers play in outdoor recreation and the economy. A key component of President Obama's America's Great Outdoors Initiative calls for reconnecting Americans, especially youth, to the riverways and lands that power our communities.
“America's rivers are the lifeblood of our economy – and the Connecticut River is no exception,” said Secretary Salazar. “It is great to see such robust efforts underway to restore this river and to fully realize its recreational, environmental and economic benefits to the Hartford community.”
Salazar was briefed on restoration efforts on the Connecticut River and iQuilt, an innovative plan to connect 45 of the city's public spaces and cultural assets. The central feature of the iQuilt project is the Greenwalk, a proposed pedestrian and spatial connection of Hartford's two main landscapes, the Connecticut River Waterfront and Bushnell Park.