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 Selects Town of Rockport, Thatcher Island Association as New Owners of Straitsmouth Island Lighthouse
Last edited 4/25/2016
ROCKPORT, Ma. – Secretary of the Interior Ken Salazar today announced the selection of the Town of Rockport in partnership with the Thatcher Island Association to acquire the historic Straitsmouth Island Lighthouse, based on a recommendation by the National Park Service.
Under the National Historic Lighthouse Preservation Act, Salazar will forward his selection to the administrator of the U.S. General Services Administration, who will transfer ownership of the lighthouses from the U.S. Coast Guard to the new owners.
“Straitsmouth Island Lighthouse has marked the entrance to Rockport Harbor since the 19th Century and was listed on the National Register of Historic Places in 1987,” Salazar said. “By transferring ownership of the lighthouse to the Town of Rockport in partnership with the Thatcher Island Association, the American people can be assured that is this important part of our nation's rich maritime history will be preserved for future generations.”
The act, enacted in 2000, authorizes transfer of historic lighthouses from the Coast Guard to whatever federal, state and local agencies; nonprofits; or community development organizations can best protect them.
Under the act, the new owners must ensure the lighthouse will be used for recreational, historic, cultural or educational purposes and made available to the general public at reasonable times and under reasonable conditions.
The historic lighthouse is still active and has a green light that flashes every six seconds. Straitsmouth Island itself is owned by the Massachusetts Audubon Society as a bird and wildlife sanctuary.