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.
In 2009, the Command Oil Spill Trustee Council, consisting of the Fish and Wildlife Service, National Oceanic and Atmospheric Administration (NOAA), and three California state agencies, continued to implement and monitor several inter-related restoration projects. These projects are intended to compensate for injuries to birds and impacts to human recreational uses resulting from an oil spill in 1998 along the San Mateo County coast.
One of the primary components of the Command restoration plan is to protect seabird colonies on rocky outcrops and islands in and near the Gulf of the Farallones National Marine Sanctuary and the Farallones National Wildlife Refuge. Through a partnership with the U.S. Coast Guard and the Federal Aviation Administration, the Command Trustee Council has been able to establish seven restricted zones around seabird colonies and educate boaters, kayakers, pilots and others about the need avoid these sensitive sites and to view the seabirds without disturbance.
The trustees plan to install an additional 27 buoys around the enclosure areas. This project has become a model that is being adopted at other coastal restoration sites up and down the California coast.
The trustees have also designed and built rock walls and structures to prevent disturbance of common murre nest sites by hikers using a foot path on Southeast Farallon Island. This project has led to a 12% increase in nests. Trustee biologists have observed that the vast majority, approximately 90%, of the common murres on the island reside and nest in areas where walls shield the birds from view. Additional projects undertaken by the trustees include a partnership to restore native vegetation to Año Nuevo Island, improving public access to beaches and coastal observation sites, and continuing to monitor the results of bird management and land acquisition projects undertaken in past years.