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: White River to be Designated Nation's Second National Blueway
Officials to Unveil Series of New Initiatives to Support Existing Partnerships
Last edited 4/27/2016
LITTLE ROCK, Ark. – On Wednesday, January 9, 2013, Deputy Secretary of the Interior David J. Hayes will join Senator Mark Pryor, Congressman Tim Griffin, Deputy Assistant Secretary of the Army Terrence “Rock” Salt, and Deputy Undersecretary of Agriculture Ann Mills, as well as other federal, state and local officials and conservation partners to announce that the White River, along with its watershed, has been designated the nation's second National Blueway.
As part of President Obama's America's Great Outdoors Initiative to establish a community-driven conservation and recreation agenda for the 21st century, Wednesday's designation will recognize the innovative partnerships that are working to conserve the White River across its watershed from the Ozarks to the Mississippi. Federal leaders will also announce a series of new initiatives aimed at supporting the new National Blueway.
David J. Hayes, Deputy Secretary of the Interior
Senator Mark Pryor
Congressman Tim Griffin
Terrence “Rock” Salt, Deputy Assistant Secretary of the Army, Civil Works
Ann Mills, USDA Deputy Undersecretary for Natural Resources & Environment
Cynthia Dohner, Regional Director, U.S. Fish and Wildlife Service
Scott Simon, Director, Arkansas Office, The Nature Conservancy
Jim Stinson, Mayor, Clarendon, Arkansas
David Houghton, President, National Wildlife Refuge Association
Representatives of the states of Arkansas and Missouri
National Blueway Recognition Ceremony for the White River and Watershed