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Salt marshes, bogs, swamps, and freshwater marshes are examples of wetlands, each one home to wide varieties of plant and animal life. This type of biome is a complex ecosystem that benefits people and upon which humans have had destructive impact.
(Source: DCMP)
Figure 2.15 (OpenStax, Biology 2e) caption: When we mix table salt (NaCl) in water, it forms spheres of hydration around the ions.
(Source: OpenStax)
Chemistry experiments with salts demonstrate the following: neutralization; neutral, alkaline, and acid solutions; preparing zinc sulfide and sodium chloride; and the formation of ammonium chloride.
Moko is an explorer. As he travels the world continent by continent, he makes many friends and discovers many natural phenomena which sometimes delight him, and other times scare him. Each animated episode recounts an adventure and takes an "original story" approach to explaining these natural phenomena. In this episode, Moko sees the sea for the first time. He thinks it is a huge river or a large lake. But when he tastes the water, it's salty. He wonders what sorcerer could have played such a dirty trick. He returns to his village and asks a wise old man to cast a spell to prevent the river used by the people from ever becoming salty. The old man assures him that it won't be necessary, that the river will never be salty. So Moko thinks that a well-meaning sorcerer must already be protecting the river--thankfully.
Robotic students at UC Berkeley have designed a small robot that can leap into the air and then spring off a wall. It can also perform multiple vertical jumps in a row, resulting in the highest robotic vertical jumping agility ever recorded. The agility of the robot opens new pathways of locomotion that were not previously attainable. The researchers hope that one day this robot and other vertically agile robots can be used in search and rescue missions.
The salt marshes along Florida’s Gulf Coast provide a variety of ecosystem services and are economically important, but in decline. Dr. Hughes studies these marshes in hopes of finding a way to slow their decline and preserve these services. Part of the series "In The Grass, On The Reef."
In the summer, seagrasses slough off old shoots and grow new ones. The sloughed off grass is pushed into salt marshes. Dr. Randall Hughes and her crew weigh the benefits of seagrass wrack versus its destructive aspect. Part of the series "In The Grass, On The Reef."
After a few relatively mild winters on the northern Gulf coast, cold intolerant black mangroves have started to multiply in salt marshes. Dr. Hughes is conducting an experiment to test whether some mangroves are better adapted to colder climates. Part of the series "In The Grass, On The Reef."
Mobile computing is accelerating beyond the smartphone era. Today, people wear smart glasses, smart watches, and fitness devices, and they carry smartphones, tablets, and laptops. In a decade, the very same people are likely to wear or carry tens of wireless devices and interact with the Internet and computing infrastructure in markedly different ways. Computer scientist Xia Zhou is working to make sure there are no traffic jams with the increased demand. With support from the National Science Foundation, Zhou and her team at Dartmouth College are developing ways to encode and transmit all that data faster and more securely. Part of the "Science Nation" series.
The seafloor has a diverse landscape, which includes underwater lakes and rivers. How is that possible? Well, these lakes and rivers form when seawater seeps up through thick layers of salt, which are present beneath the seafloor. As the water seeps up, it dissolves the salt layer, causing it to collapse and form depressions. The dissolved salt makes the water denser, and because it is denser than the water around it, it will settle into the depressions, forming a river or lake. Part of the "Deep Sea Dive" series.
One day, microbes will eliminate dirt and garbage, filter exhaust systems, and help make self-cleaning clothing possible. Takes viewers on a global journey-from the U.S. to Iceland, Sweden, India, China, Senegal, and Australia-to meet the world's leading specialists in bacteriology and to discover the incredible abilities of the microscopic life-forms they study. Employs state-of-the-art imaging technology and animation to illustrate how bacteria have learned to adapt to harsh environments and how they can be found in a vast array of human-made products and materials, including medicines, pesticides, plastics, solvents, and even electroacoustic speakers.
Moko is an explorer. As he travels the world continent by continent, he makes many friends and discovers many natural phenomena which sometimes delight him, and other times scare him. Each animated episode recounts an adventure and takes an "original story" approach to explaining these natural phenomena. In this episode, having made their way beyond the great valley, Moko and Totemie discover a blanket of white stretching out in front of them. An old man tells them that once they get to the other side they will see what so many others have dreamt of seeing, but that they must fly like birds. He offers them a strange kite. As the wind picks up, they hang on tight and fly off from the salt pan.
Sea spray aerosols occur naturally in the salty ocean air, and there’s much more in each of those tiny bursting bubbles than salt. They’re bursting with ocean life, from bacteria to phytoplankton--even viruses. Because sea spray aerosols seed clouds, they affect the climate. With support from the National Science Foundation (NSF), atmospheric chemist Kimberly Prather of the University of California, San Diego, and chemist Vicki Grassian of the University of Iowa are leading a team of scientists around the country who are working to better understand what role sea spray aerosols play in weather and climate change climate models. Part of the National Science Foundation Series “Science Nation.”
Part of the "Chemistry in Action" series. Demonstrates how chemical compounds are placed into groups so that they may be studied easier. Explores acids and bases, emphasizing their nature and common everyday uses. Discusses carbon compounds, and introduces the following terminology: acid, base, pH, salt, carbon, organic, and hydrocarbon.
Lab experiments show how magnesium, zinc, iron, and copper react with hydrochloric and nitric acids. Also shows the displacement of two metals from salts.
The American South is home to some of the world’s most spectacular ecosystems, from coral reefs to salt water marshes. These two national monuments are underwater paradises and support a diverse and complex system of plant and animal life.
Amy Battocletti is a Navy veteran who was awarded an NSF Graduate Research Fellowship in 2014. She’s a doctoral candidate in biology at Georgetown University, conducting research on the impact of genetic variation within plant species in salt marsh ecosystems. Part of the Scientists and Engineers On Sofas Series.
Dr. Randall Hughes is interested in what makes a salt marsh less susceptible to disturbances, such as drought. She looks at species diversity to determine what combinations of plants and animals make for a more productive ecosystem. Part of the series "In The Grass, On The Reef."
Scientists have long chalked up ocean mixing of salt, heat, nutrients, and gases, such as oxygen and carbon dioxide, to wind and tides. New research is investigating another possible contributor: krill. Mixing ocean water may seem like a big job for such a tiny creature, but krill are a force of nature when they migrate in giant swarms to feed at night. Part of the "Science Nation" series.
In this program, viewers will travel the world and learn about the diversity of plants throughout the various land regions around the world. Graphics, animation, and live-action footage will assist students in identifying characteristics of various habitats on Earth. Students will learn how plants have adapted to live in polar regions, tundra, desert, grasslands, forests, and salt and freshwater habitats. Part of the "Way Cool Science" series.
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