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.
Salazar Announces National Park Service Will Waive Fees on August 14 and 15
Last edited 4/25/2016
WASHINGTON – Secretary of the Interior Ken Salazar today announced that the National Park Service will waive entrance fees on August 14 and 15 to encourage all Americans to visit our national parks.
“This fee-free weekend provides an opportunity for individuals and families alike to take an affordable vacation or to explore a nearby park they have never visited before,” Salazar said. “I encourage everyone to take advantage of the free admission to visit not only our greatest natural wonders but also our nation's historic and cultural icons.”
There are 391 national parks located across the country in 49 states, many of which will hold free events on August 14 and 15. A complete list by park or state is available at www.nps.gov. A sampling of offerings include:
Ranger-led programs with free instruction and equipment loans for those who want to get wet. Enjoy snorkeling at Cape Cod, kayaking at DeSoto, or canoeing in Congaree or Big Cypress. Prefer to simply chill out near the water? Bring your blanket to one of the 50 parks with beaches.
Watch history come to life at military encampments and firing demonstrations at Antietam, Gettysburg, Fort Laramie, Fort McHenry, Fort Vancouver, Fort Stanwix, Fort Matanzas, Kings Mountain, Wilson Creek, Kennesaw Mountain, and Yorktown.
Dance or tap your toes to the sounds of the Pig War Band at San Juan Island, Cajun music at Jean Lafitte, Ojibwe music at Grand Portage, mountain music on the Blue Ridge Parkway, folk songs at Carl Sandburg, classical music at Saint-Gaudens, or dulcimer music on the Natchez Trace Parkway.
The entrance fees being waived at the 146 sites usually charge for admission range from $3 to $25. There are 246 other parks that do not have entrance fees so you can plan a free visit year-round. The fee free waiver does not include other fees collected in advance or by contractors—such as fees charged for camping, reservations, tours and use of concessions.
The National Park Service website provides information to help the public plan their park adventures at www.nps.gov.