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 Jewell Celebrates 20th National Public Lands Day at Martin Luther King Jr. National Historic Site
Office of the Secretary
Commends the Work of Thousands of Volunteers at More Than 2,000 Parks, Wildlife Refuges and Other Public Sites on Nationwide Day of Service
ATLANTA – Secretary of the Interior Sally Jewell today joined U.S. Environmental Protection Agency Deputy Administrator Bob Perciasepe, entertainer CeeLo Green, and hundreds of volunteers at the Martin Luther King Jr. National Historic Site to celebrate the 20th annual National Public Lands Day. Nationwide, an estimated 180,000 volunteers are expected today at more than 2,000 sites across the country for the largest, single-day volunteer effort on behalf of parks and other public lands.
“With thousands of people giving of their time and labor from coast to coast to restore our country's historic places and natural treasures, National Public Lands Day reflects the great American spirit of volunteerism,” Jewell said.
Secretary Jewell and hundreds of volunteers participated in activities such as pulling weeds at the “I Have a Dream” International World Peace Rose Garden, removing invasive plants at Freedom Park, and cleaning the interior of Ebenezer Baptist Church, where Dr. Martin Luther King, Jr. was baptized, ordained and served as a co-pastor until his tragic death in 1968.
“It is appropriate that we celebrate this day here in Atlanta, the birthplace of a great American who tapped into the willingness of Americans to go beyond themselves for a greater good,” Jewell said. “It is Dr. King's spirit of service and volunteerism and his desire to create a better America and stronger communities that continues to motivate us today.”
Jewell applauded the The National Environmental Education Foundation, which created National Public Lands Day in 1994 and helps faciliate the participation of eight federal agencies and more than 250 state, county and city partners, and nonprofit organizations.
In 1994, National Public Lands Day had just three sites and 700 volunteers. Last year, more than 175,000 volunteers participated, collecting an estimated 23,000 pounds of invasive plants, building and maintaining an estimated 1,500 miles of trails, planting about 100,000 trees, shrubs and other native plants, and removing an estimated 500 tons of trash from trails and other places.
"Tight budgets and fiscal uncertainty make volunteer efforts at places like our national and local parks and wildlife refuges even more critical to ensuring that they remain healthy and accessible for all Americans,” said Jewell.
On the eve of National Public Lands Day, Jewell visited with more than 50 local youth who were camping - many for the first time - on the grounds of the Martin Luther King, Jr. National Historic Site before joining today's volunteer efforts.
"Getting out on the public lands to volunteer is a great way to give back to the community while also gaining a better appreciation for the importance of these important places," said Jewell. "Not only can we improve the lands we enjoy for outdoor recreation, but we can also help kids create a connection with nature that will last a lifetime.”
There are a variety of opportunities to get involved, connect with people in your community and protect and promote our public lands. Visit http://www.volunteer.gov to search for other opportunities throughout the year.