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.
DOINews: BLM-New Mexico: Ancient Mammoth Teeth Discovered in Socorro County
This photo shows mammoth teeth from the late Pleistocene Epoch that were discovered on BLM-administered public land outside Socorro, N.M. Photo by Andi Sullivan, BLM.
From left, Archaeologists Bruce Huckell and Chris Merriman help to identify the teeth as likely belonging to a Columbian mammoth. Photo by Andi Sullivan, BLM.
Archaeologists Bruce Huckell (right) and Chris Merriman excavate the mammoth teeth, which are now housed at the New Mexico Museum of Natural History. Photo by Andi Sullivan, BLM.
This artist's rendering depicts a Colombian mammoth (photo credit: Sergiodlarosa, Wikipedia Commons).
In May 2012, in the sweltering desert heat outside Socorro, N.M., archaeologists and paleontologists worked side by side to extract two fragile mammoth teeth, believed to be from the late Pleistocene Epoch, which ended roughly 11,500 years ago.
Bruce Huckell, professor of Archaeology at University of New Mexico; Gary Morgan, curator of Paleontology at the New Mexico Museum of Natural History; and Philip Gensler, regional paleontologist for the Bureau of Land Management, extracted the mammoth teeth, which were discovered during an archaeological inventory in the summer of 2011.
When the paleontological material was originally found, it was unknown what the fossilized fragments were. However, shortly after the discovery, a field visit was made to the site, and it was determined that the exposed material were fragments of a mammoth tooth. It wasn't obvious at that time what other parts might be present below the surface, and thus efforts to protect and remove the fragile fossils began.
In early spring 2012, Huckell and UNM graduate student Chris Merriman, at the request of the BLM, collected tooth fragments on the ground surface and tested the area to better understand the extent of the mammoth remains. This testing revealed that there were actually two teeth present, and confirmed that they were, in fact, mammoth molars most likely belonging to a Columbian mammoth - known to paleontologists as Mammuthus columbi.
The two mammoth teeth were carefully uncovered, encased in plaster jackets, and extracted from the ground. Once they were removed, the ground below the teeth was tested to see if any additional mammoth bones were present; none were found.
The encased mammoth teeth then traveled to the New Mexico Museum of Natural History, where the sediments will be carefully removed and the teeth will be hardened and repaired. The NMMNH is the designated repository for paleontological resources found on BLM-administered lands, so the teeth will remain in their collection. Further research and analysis of the teeth could reveal additional information about the mammoth and about the time period in which it lived.
The efforts and contributions of time and labor by Huckell; Merriman; Morgan; and Dave Love, geologist with the New Mexico Bureau of Geology and Mineral Resources, have been invaluable to this effort to preserve and protect these important paleontological resources on public lands in Socorro County.
As the BLM's new regional archeologist, Gensler has been integral in the planning, field testing, removal and preservation of the teeth. Many thanks to the BLM Socorro Field Office staff who helped with the protection, planning, and support of this project. And special thanks to Jeff Fassett, Albuquerque District project coordinator, who discovered the fragments during the archaeological inventory.
By: Andi Sullivan, paleontological coordinator, BLM Socorro, N.M., Field Office