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By 1883 all the buffalo were gone from the American prairie, but conservationists saved a few hundred in captivity. Today the World Wildlife Fund and the American Prairie Reserve are trying to reintroduce a genetically pure herd back to the wild. Segment of video from Wild Chronicles Series.
(Source: DCMP)
With support from the National Science Foundation, Lake Ecologist Jasmine Saros and her team from the University of Maine are gathering diatoms from the lake waters of southwestern Greenland. They are using the diatoms in their studies of how climate change is affecting this Arctic ecosystem. Diatoms are a type of algae that responds rapidly to environmental change. Diatom species generally associated with warmer conditions are increasing at unprecedented rates in the sediment record.
In a gas turbine, the linear motion of gas causes rotors to spin, ultimately creating electricity. The forward rotating blades pump air under high pressure into the combustion chamber where natural gas ignites on contact with the air. At 1,500 degrees Celsius, the stream of gas rushes past the rear turbine blades, causing the entire rotor to spin. A generator transforms that rotational energy into electricity.
In the last few years, the Red Planet has yielded up many new clues that life may have once existed there...and may even exist there today. There is now proof that water once flowed on the surface, that Mars once had lakes, and that the frozen poles are mostly water. Mars has snow--an aurora--and lightning generated by dust storms. Most intriguing of all are the seasonal plumes of methane that just may point to bacteria living below the surface.
Meteorologists studying clouds in Europe are learning about the microphysical processes that occur naturally in clouds. This knowledge helps researchers gain new fundamental knowledge that can help improve weather and climate forecast models. Students will discover how scientists study cloud formation by generating artificial clouds in a laboratory. Scientists research how clouds originate and how they react to surrounding natural elements. They will reveal how microwave radiometers, lasers, and satellites are used in researching cloud development.
Rented by the BP Oil Company to drill an oil well in the Gulf of Mexico, the Deepwater Horizon drilling rig explodes on April 20, 2010. It sinks into the ocean and causes a gigantic oil spill. At issue is negligence in the maintenance and in the tests carried out. On September 19, after months of unsuccessful attempts, the spill is finally declared sealed. However, this incident has generated the largest marine oil disaster in history. Part of the "Butterfly Effect" series.
The city of Ann Arbor, Michigan has turned to engineering research to tackle an issue facing many cities: aging stormwater infrastructure during a time of tight budgets, growing populations, and more extreme weather. With support from the National Science Foundation, civil and environmental engineer Branko Kerkez and a team at the University of Michigan are building a new generation of smart and connected stormwater systems. Part of the "Science Nation" series.
Roads are the largest human artifact on the planet. As the transportation crisis grows, a new generation of ecologists, engineers, planners and citizens are working to transform the future of the American road. America's road network was largely created before the rise of modern ecology. Now, with greater concern for the environment, the film asks, how do we balance those concerns with our ongoing transportation needs?
Are humans the accidental products of an uncaring universe? Or are they the beneficiaries of a cosmic order that was planned beforehand to help them flourish? This documentary explores growing evidence from physics, chemistry, biology, and related fields that our universe was designed for large multi-cellular beings like ourselves. Geneticist and author Michael Denton investigates the special properties of carbon, water, and oxygen that make human life and the life of other organisms possible.
A new generation of smaller, highly capable radar systems in the Dallas/Fort Worth area is able to track with more accuracy the location of tornadoes and other severe weather conditions. These new systems are spaced much closer together than current radar sensors, and the closer proximity is part of the reason the new systems can catch a tornado that could be missed by current radar. Part of the National Science Foundation Series “Science Nation.”
Parakeet talks about grocery bags and reusing them. Amanda has a collection of bags which she throws out whenever she gets bored of them. The first guest, the dog, says the llama is stealing from him and selling his things to a thrift store. The llama says she is not stealing anything but recovering and reusing the things thrown out by the dog. The fleas show a documentary on how wasteful consumption generates pollution. The celebrity guest, Al Gore, talks about the consequences of consumerism; buying new things means buying more packaging, more waste, and waste pollutes and harms the planet.
Engineers are joining forces with designers, scientists, and doctors at Drexel University to produce new biomedical textiles, and the resulting smart clothes are not only fashionably functional, but could also be life savers. With support from the National Science Foundation (NSF), electrical and computer engineer Kapil Dandekar, industrial and fashion designer Genevieve Dion, and OB-GYN Owen Montgomery are incorporating RFID technology into their “belly bands” for women with high-risk pregnancies. The band continuously tracks data and alerts the doctor’s office via the Internet should the woman start contractions. Part of the National Science Foundation Series “Science Nation.”
Solar power is defined as the energy produced by converting sunlight into heat or electricity. It is one of the most abundant and affordable sources of energy available. However, it is difficult to harness (and even impractical) in some parts of the world, so it is important to explore the process of converting sunlight to power. Shows three primary ways to produce solar power on a large scale: solar power–generating plants, photovoltaic cells, and solar thermal heaters.
California agriculture is a $37.5 billion industry with "The Golden State" being home to nine of the nation's top ten producing counties. Researchers at UC Davis have created innovative farming techniques to help farmers meet the many challenges ahead. Part of the "9 Billion Mouths to Feed: The Future of Farming" series.
Diver Jill Heirnerth and a team of explorers and scientists explore the massive hidden underground rivers, caverns, and waters of the Floridan aquifer. The aquifer is essential for millions of people, and the team wants to study the impacts of generations of agriculture and urbanization. They are also checking the overall health of the aquifer.
Dr. Randall Hughes is examining diversity within the marsh. She discusses the diversity of the foundation species of a marsh: smooth cordgrass (Spartina alterniflora). Does having a greater diversity of genetically distinct plants make for a healthier marsh? Part of the series "In The Grass, On The Reef."
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 learns about water tables and how streams develop. During the dry season, the river level drops and the remaining water turns to mud. He can't swim or drink the water. A man with a strange stick points the stick to the ground, and when Moko digs down there, water gushes out! Moko learns that even if no rain falls, Mother Earth could still be generous if you know the right way to ask her.
First in the series of three productions designed to let students learn by doing, guiding them through the science and history behind the Wright Brothers' invention of powered flight. This first component contains six ten-minute segments that explore (1) humankind's historical preoccupation with the idea of flight and the life and times of the Wright Brothers; (2) the science concepts of control, lift, and propulsion; and (3) evolution of the science of flight since the Wright Brothers.
Assembly line workers won’t be swapping stories with their robotic counterparts any time soon, but future robots will be more aware of the humans they’re working alongside. With support from the National Science Foundation, roboticist and aerospace engineer Julie Shah and her team at the Massachusetts Institute of Technology are developing next generation assembly line robots that are smarter and more adaptable than robots available on today’s assembly lines. Part of the National Science Foundation Series “Science Nation.”
Marine debris comes from many different sources and enters the ocean in many ways. Intentional littering and dumping are big causes. Sometimes the trash goes directly into the ocean, and sometimes marine debris is indirectly generated in a city hundreds of miles from the ocean. When someone litters on the street or parking lot, rainwater can move the trash into storm drains that empty into streams, rivers, and other bodies of water. Improper or careless waste disposal also contributes to this environmental concern. Part of the "Trash Talk" series.
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Biology related concepts
A collection containing 59 resources, curated by Benetech
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
