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Explores the strange and relatively unknown world of sleep-a world in which we spend approximately one-third of our lives. Shows how the discovery of REM (Rapid Eye Movement) during our dream period in the early 1950s by Dr. Nathaniel Kleitman at the University of Chicago brought about an understanding of the mechanism of sleep. Before his discovery, it was believed that during sleep the brain was in a state of rest. Also, overviews the nature and frequency of dreams and nightmares, and sleep disorders such as insomnia, apnea, and narcolepsy that affect millions of Americans.
(Source: DCMP)
Gene therapy is a method for treating inherited diseases by delivering corrective versions of genes to patients. Dr. Jean Bennett and Dr. Albert Maguire focused their careers on developing a successful gene therapy for an inherited form of childhood blindness called Leber congenital amaurosis (LCA). This documentary tells the story of how the LCA gene therapy was developed. Students will learn how autosomal recessive conditions are inherited, how scientists can use modified viruses to deliver human genes to cells, what makes the eye an ideal tissue for gene therapy, and how model organisms are used to test treatments before they are tested in patients.
The speed of light is constant in a vacuum, but what about in the everyday world? Examines the behavior of light as it passes through physical substances in a collection of 23 computer-animated video shorts. Outlines Ptolemy's Law of Refraction and the concept of angle of incidence by examining light's motion through air, water, glass, and other media. Explores Snell's Law by highlighting the importance of a refractive index along with displacement, deviation, dispersion, and the role of refraction in fiber optics. Studies lens types including biconvex, convex meniscus, plano-convex, and concave models, in addition to telescopes, magnifying glasses, and the human eye.
While many of rely on passwords to protect their identity, there's more sophisticated identity recognition technology called "biometrics" for use. Security measures that use biometrics rely on a person's unique characteristics and traits rather than on what that person can remember, such as a password. Ocular biometrics, in particular, relies on iris and retinal scanning. With support from the National Science Foundation, computer scientist Oleg Komogortsev and a team at Texas State University are taking the technology a step further, making it even more secure, reliable and nearly impossible to fool. Part of the National Science Foundation Series “Science Nation.”
The Magic School Bus is an award winning animated children’s television series based on the book series of the same title by Joanna Cole and Bruce Degen. It is notable for its use of celebrity talent and being both highly entertaining and educational. Ms. Frizzle encourages the class to bring in rotten food from the back of their refrigerators on "Accidental Science Project Day." Later, she shrinks the bus down so the class can examine a rotting log. The class soon realizes there's a lot more going on with this rotting log than first meets the eye.
Part of the "The Biology Classics" series. The cross-eyed flatworm, planaria, is both scavenger and predator, depending upon opportunity. Details food-seeking behavior, the flatworm's feeding method, locomotion (produced by a carpet of cilia), internal anatomy, and reproduction through the remarkable process of regeneration.
What color is a banana? Duh, it’s yellow. But what is yellow? How do humans see color in the first place? This series of questions led host Joe Hanson down the path of trying to decode the visual system of humans. Part of the "It's Okay to Be Smart" series.
Part of the animated "Johan, the Young Scientist" series. Johan is curious about where oil comes from. After a briefing from Professor Hoo about how oil is formed, Johan, Ani, and Moki decide to find oil for themselves. They visit a swamp, an offshore oil rig, and finally drill for oil with the help of robots.
Marine biologist Ayana Johnson fell in love with the ocean the moment she laid eyes on a coral reef at age five. She uses her passion to protect marine life and improve the fishing industry.
The scientific team visits the Chagos Archipelago, a tropical paradise with some of the healthiest coral reefs on the planet. They want to study reefs seemingly untouched by man but instead become witnesses to a bleaching incident that transforms the reefs right before their eyes. Part of the "Global Reef Expedition" series.
Host award-winning geoscientist, Richard Alley provides an eye-opening look at some of the world's most important case studies in smart energy. Alley travels to Spain and Morocco where large-scale solar farms and individual photovoltaic panels atop tents in the Sahara are beginning to bring the vast potential of the sun down to Earth. In Brazil, abundant natural resources are transformed into efficient, sustainable biofuel, making Brazil the only nation whose cars could keep running if all gasoline were to vanish. In Denmark, and West Texas, citizens have taken sustainability into their own hands by becoming stakeholders in wind turbines. And in China, he explores multiple sustainable energy technologies, including exclusive footage from GreenGen, the world's most advanced low-carbon emissions power generation plant. Part One Earth: The Operators’ Manual.
Why do owls have heads shaped like a satellite dish? And why are their eyes so large. These are just a few of their anatomical features that enable to capture prey. But various species have also adapted to varied climates to chase their prey. Segment of video from Wild Chronicles Series.
With support from the National Science Foundation, astronomers Marc Buie and John Keller are involving citizen scientists from throughout the western United States to participate in the Research and Education Cooperative Occultation Network (RECON). The project has provided telescope equipment and training to 14 small western U.S. communities north and south of Reno, Nevada, where night skies are clear and dark. When RECON students look out at the night sky, they look way out to the Kuiper Belt, a ring of icy debris that litters the Solar System out beyond Neptune. The network is looking to determine the sizes of Kuiper Belt objects as they pass in front of distant stars. Part of the National Science Foundation Series “Science Nation.”
The scientific explanation of global warming rests in the understand of the element carbon. Carbon is the central element of life, and its atomic structure enables it to hold onto other elements. This characteristic provides the relationship between carbon and global warming. Segment of video from Wild Chronicles Series.
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, after a long voyage Moko arrives in Amazonia. He thinks that all of the people from this country must be giants because the trees in the forest he comes across are enormous. He climbs the tallest tree he can find and looks out towards the landscape and sees that the trees stretch out as far as the eye can see. Moko wonders if this is what the end of the world looks like. He feels quite alone and makes a wish to the stars to put a new friend on his path.
An important part of the conservation effort in Gorongosa National Park is to identify the species living in the park to ensure their protection and monitor their recovery. Every year, teams of scientists conduct biodiversity surveys in different areas of the park. Piotr Naskrecki leads a survey project in a particularly remote area, the limestone gorges of the Cheringoma Plateau, to study the bat population.
David Boboltz of the National Science Foundation explains the hazards of not wearing the appropriate glasses to view the solar eclipse on August 21, 2017. Those wishing to view the eclipse need to make sure they have approved solar glasses so they do not damage their eyes.
The Exumas are a string of small islands in the Bahamas. This documentary explores the geography of the islands and provides a window into their natural features through the eyes and thoughts of a young woman who lives there. Underwater and time-lapse imagery are used to show a side of the Exumas that few people, even those lucky enough to have visited, have ever seen.
When Genoveva opens her magic book, the screen is filled with feathers, beaks, horns, legs, wings, and snouts. Genoveva's magic book transports her to various habitats where she learns about the animals that live there. In this episode, Genoveva visits with the rhea. The rhea has a round body covered with feathers, long neck and big eyes. Genoveva visits the plains to find out why the rhea does not use its wings to fly.
New scientific evidence suggests that some wolves evolved into dogs by domesticating themselves, and not by humans taming them. Features evidence that dogs have traveled and been buried with humans since prehistory, adapting to every climate and evolving into many subspecies or types of the same dog species. Human cultures might not have evolved as they did without the help of the dog, our most cherished and probably first domestic animal companion.
Showing collections 1 to 5 of 5
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