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.
Readout of Secretary Salazar's Visit to Colorado's National Renewable Energy Laboratory Site
Office of the Secretary
GOLDEN, CO – Secretary of the Interior Ken Salazar today visited the National Renewable Energy Laboratory (NREL) campus in Golden, Colorado where he toured the 327-acre campus' state-of-the-art facilities and met with scientists regarding ongoing research on the development, commercialization and deployment of renewable energy.
“Across the Administration, we're looking at ways to create jobs and strengthen the economy – and a big part of that is building a sustainable, clean energy future,” Salazar said. “The innovative research that they're doing here at NREL is playing a critical role in developing new technologies that can compete in the marketplace. When we talk about President Obama's ‘all-of-the-above' energy strategy, it starts in places like these laboratories.”
Joined by NREL Director Dr. Dan Arvizu, Salazar toured the campus and viewed construction underway for the new Energy Systems Integration Facility, a research & development center designed to help NREL work with industry partners to address challenges of incorporating renewable energy into the electrical grid.
Once completed, the 185,000-square-foot Energy Systems Integration Facility will be the nation's only facility that can conduct megawatt-scale testing of the components and strategies needed to safely move clean energy technologies onto the electrical grid "in-flight" at the speed and scale required to meet federal policy.
Salazar's visit comes on the heels of Interior's approval of the 31st utility-scale renewable energy project since 2009 as part of a Department-wide effort to advance smart development of renewable energy on our nation's public lands. The 17 solar projects, 6 wind farms and 8 geothermal facilities, when built by the companies, will provide approximately 7,200 megawatts of power to communities across the West, or enough to power nearly 2.5 million homes.
These achievements build on the historic expansion of renewable energy under President Obama, with energy from sources like wind and solar doubling since the President took office.