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Showing 98 results for chemistry ...
- Type: Person
Eslanda Cardozo Goode Robeson was an author and anthropologist who wrote about African decolonization, African American civil rights, and international politics.
- Type: Place
Frances Perkins was by far one of the most important women of her generation. In 1932, her long and distinguished career as a social worker and New York State Industrial Commissioner took an important turn for American women, and for the country as a whole, when she was appointed U.S. Secretary of Labor, the first woman ever to be included in a president's cabinet.
Little Rock Central High School National Historic Site
The Little Rock Nine
- Type: Person
In 1957, nine ordinary teenagers walked out of their homes and stepped up to the front lines in the battle for civil rights for all Americans. The media coined the name “Little Rock Nine" to identify the first African American students to desegregate Little Rock Central High School.
Boston National Historical Park
Mary Hutcheson Page
- Type: Person
“A born executive,” Mary Hutcheson Page made invaluable contributions to the suffrage movement in Massachusetts and the United States through her dedicated leadership, organizing, and fundraising.
Boston National Historical Park
Arnold William Erickson
- Type: Person
Arnold William Erickson was one of the older sailors on the USS Cassin Young; he enlisted at age 34 in 1942. Stationed aboard USS Cassin Young as a Radioman, he was killed in action after a kamikaze struck Cassin Young early on the morning of July 30, 1945.
Yellowstone National Park
Cistern Spring
- Type: Place
Yellowstone National Park
Fumaroles in Porcelain Basin
- Type: Place
Yellowstone National Park
Steamboat Geyser
- Type: Place
Yellowstone National Park
Porcelain Springs
- Type: Place
Yellowstone National Park
Porcelain Basin Overlook
- Type: Place
Yellowstone National Park
Norris Geyser Basin Trails (Porcelain Springs Junction)
- Type: Place
Norris Geyser Basin is one of the hottest and most acidic of Yellowstone's hydrothermal areas. It is outside of the most recent Yellowstone caldera, but inside the first and largest caldera. It sits on the intersection of three major faults and is a very active earthquake area.Each year, new hot springs and geysers appear while others become dormant. Geologic events trigger many of these changes. Even small earthquakes can alter hydrothermal behavior. Clear pools become muddy
Yellowstone National Park
Norris Geyser Basin Trails (Cistern Spring Junction)
- Type: Place
Norris Geyser Basin is one of the hottest and most acidic of Yellowstone's hydrothermal areas. It is outside of the most recent Yellowstone caldera, but inside the first and largest caldera. It sits on the intersection of three major faults and is a very active earthquake area.Each year, new hot springs and geysers appear while others become dormant. Geologic events trigger many of these changes. Even small earthquakes can alter hydrothermal behavior. Clear pools become muddy
Yellowstone National Park
Norris Geyser Basin Trailhead
- Type: Place
Limited parking, especially 10 am-6 pm. Park at your own risk. When Steamboat Geyser erupts, dissolved minerals in the spray can damage glass and paint on your vehicle.Norris Geyser Basin is one of the hottest and most acidic of Yellowstone's hydrothermal areas. It is outside of the most recent Yellowstone caldera, but inside the first and largest caldera. It sits on the intersection of three major faults and is a very active earthquake area. Constant ChangeEach year, new hot
Yellowstone National Park
Emerald Spring
- Type: Place
- Type: Article
Sonoran Desert Network scientists monitor key resources and weather at Organ Pipe Cactus National Monument by taking measurements throughout the year, which helps us notice changes over time. This report summarizes weather, groundwater, and springs data from Water Year 2022. The data indicate the park's springs contained near-average levels of water, but high levels of several water chemistry parameters. WY2022 was warm and dry overall, with fewer cold days than average.
- Type: Article
In 2007, the Rocky Mountain Inventory and Monitoring Network—a small team of NPS scientists—began monitoring natural resources, called “vital signs,” in Glacier and nearby parks. Vital signs indicate park health and serve as red flags if conditions deteriorate. Results from monitoring these vital signs support park managers’ efforts to make science-based management decisions. Learn about the NPS Inventory and Monitoring Program and its work in Glacier National Park.
Bryce Canyon National Park
Bristlecone Loop Trailhead
- Type: Place
A short path through fir and pine leads to the easy 1.0 mi/1.6 km Bristlecone Loop, as well as the 8.8 mile (14.2 km) backcountry Riggs Spring Loop and 23 mile (37 km) Under-the-Rim Trail. Though the Bristlecone Loop trail only climbs 200 feet (61 m) and is rated as Easy, be sure to carry water, wear ankle-supporting footwear, and postpone your hike if lightning is expected.The Bristlecone Loop reaches elevations over 9,100 feet (2778 m). Here you will pass by bristlecone pin
Yellowstone National Park
Minute Geyser
- Type: Place
Bryce Canyon National Park
Bristlecone Loop Trailhead at Rainbow Point
- Type: Place
A short path through fir and pine leads to the easy 1.0 mi/1.6 km Bristlecone Loop, as well as the 8.8 mile (14.2 km) backcountry Riggs Spring Loop and 23 mi/37 km Under-the-Rim Trail.
Bryce Canyon National Park
Fairyland Loop Trailhead
- Type: Place
The Rim Trail This is the northern end of the 5.5 mile (8.9 km) Rim Trail that begins in the south at Bryce Point. Fairyland Loop The Fairyland Loop is a strenuous 8 mile (12.9 km) loop.