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 Spotlights Nebraska's Conservation of Sandhill Cranes, Waterfowl at Rainwater Basin Wetland Management District
Office of the Secretary
Applauds Partnerships in Conservation and Restoration Projects
Last edited 4/26/2016
GIBBON, NE -- Secretary of the Interior Ken Salazar today toured portions of the Rainwater Basin and the Platte River that serve as vital stopover areas for millions of migrating birds, including a wet meadow restoration project at Rowe Sanctuary that will provide habitat for the sandhill crane and other wildlife.
Secretary Salazar highlighted the important contributions of partners such as Ducks Unlimited, Nebraska Game and Parks, and Tri-Basin Natural Resources District in conserving and restoring habitat in the region.
“The kind of conservation partnership that we have in Nebraska is the heart and soul of President Obama's America's Great Outdoors Initiative,” Salazar said. “The Rainwater Basin Wetland Management District is a model for conservation in the 21st century, built from the ground up and with a view toward healthy lands, waters, wildlife and economies.”
Salazar toured the Funk and Clark Waterfowl Production Areas, two of 60 prominent wetland areas within the Rainwater Basin that are owned and managed by the U.S. Fish and Wildlife Service.
The Secretary ended the trip with a visit to the restoration project on Rowe Sanctuary and viewing the evening return of sandhill cranes to the Platte River. The restored area is expected to benefit the endangered whooping crane which migrates through the same region in mid to late April.
South central Nebraska remains a traditional stopover for migratory birds. Each spring the Big Bend Reach of the Platte River and the Rainwater Basin provide food and rest for millions of ducks, geese, cranes, and shorebirds making their northward journey. Their arrival begins with the first signs of melting snow and extends into early May.
The most famous of all the migrations is the month-long stay of sandhill cranes. Approximately 500,000 cranes roost and feed along the Platte River, while nearly 10 million waterfowl rest and feed in wetlands scattered throughout the Rainwater Basin. The Big Bend Reach extends from Overton to Chapman Nebraska. The Rainwater Basin encompasses about 6200 square miles immediately south of the Big Bend Reach.
Agricultural and road development during the past century has caused alterations to these migration habitats, making it critical for the Fish and Wildlife Service and its conservation partners to work together to conserve this region for the great migration.