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: Salazar Announces Transfer of Three Michigan Lighthouses to Historical Groups
Office of the Secretary
WASHINGTON -- Secretary of the Interior Ken Salazar today announced the transfer of three Michigan lighthouses -- South Haven South Pierhead, Middle Island and Waugoshance -- to local historical organizations under the National Historic Lighthouse Preservation Act (NHLPA).
“These transfers to local nonprofit groups will help ensure that the lighthouses are well-cared for and their history is kept alive for generations to come,” Secretary Salazar said. “I commend these organizations for their willingness and ability to preserve and maintain these historic icons for public educational and cultural use.”
NHLPA was enacted in 2000 as a means to transfer historic light stations no longer in use by the Coast Guard out of federal hands while guaranteeing their preservation and public use. A model of inter-agency cooperation, the NHLPA program is a partnership between the Coast Guard, the General Services Administration, and the National Park Service. Since 2000, more than 60 historic light stations have been transferred at no cost to qualified entities.
The South Haven South Pierhead lighthouse will be transferred to the Historical Association of South Haven. The 37-foot-tall cast iron structure was constructed in 1903 and is located at the head of the pier marking the entrance from Lake Michigan to the city's harbor on the Black River.
The Middle Island Light, a brick tower seventy-one feet in height, marks shallows in Lake Huron between Presque Isle and Thunder Bay. The lighthouse is to be transferred to Middle Island Lightkeepers Association, Inc., a nonprofit that has leased the historic tower from the Coast Guard for more than 20 years.
The Waugoshance Lighthouse, located in Lake Michigan, is a brick and iron structure constructed in 1870 on a shoal west of Mackinaw City. This long-empty lighthouse, once used for target practice by the US Navy during WWII, is to be transferred to the Waugoshance Lighthouse Preservation Society.
Applications for the lighthouses were reviewed by the National Park Service to ensure that the organizations have feasible and appropriate preservation and public use plans. The Secretary of the Interior makes the final decision on the disposition of the lighthouses.
“The National Historic Lighthouse Preservation Act is an excellent mechanism to forge public-private partnerships for the preservation and continued public enjoyment of an important part of our nation's maritime history,” said National Park Service Director Jonathan B. Jarvis.
Salazar has informed the Administrator of the General Services Administration to begin the process of transferring the lights to the organizations.