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Ion propulsion might sound like science fiction, but engineers at NASA are using it to drive NASA’s "Dawn" spacecraft through the solar system. Learn how ion propulsion works and why it is the reason "Dawn" will be the first spacecraft ever to orbit two solar system bodies beyond Earth. Part of the “Crazy Engineering” series.
(Source: DCMP)
What is a thundersnow storm? Most snow storms form when warm air moves into an area in the winter and rising warm air condenses to form snow. If the warm air rises very quickly, the condensing moisture collides with existing particles in the cloud causing electrically charged areas. When a cloud has charged areas, lightning can result. The accompanying sound is why scientists call these thundersnow storms.
Explores how ears work and how ears help us communicate with the world. Explains common ear problems, including blockage, infection, and hearing impairment. Discusses symptoms of these conditions and introduces doctor's diagnostic tools. Emphasizes healthy habits and stresses not to put anything in your ears smaller than your elbow. Talks about how children with hearing loss communicate and learn.
What is the information "superhighway" really all about? Communications engineers at GTE and US WEST provide a remarkably clear introduction to the basic concepts of the digital communications revolution. Demonstrates how 1s and 0s represent graphics, video, and even sounds.
What do wild animals do when we're not around? Find out with National Geographic's Crittercam. Safely worn by wildlife, Crittercams capture video, sound, and other information, giving students rare views of the private lives of animals. Crittercams help to solve scientific mysteries by providing an animal's eye view. And what scientists learn from Crittercams helps them protect the very animals that wear them. In this episode, scientists study the hunting practices of leopard seals.
This program is devoted to the senses that bring information of more distant events. The camera shows a reckless driver careening down a road—and then takes the viewer inside his eye, where the image of the potential crash site is pictured. The camera enters the ear, showing how the linked bones vibrate in response to a sound, and by using a computer graphic sequence, shows how the eye focuses on an image.
Julie loves the glorious colors associated with the sound of a rooster crowing, while Mandi remembers phone numbers by their hues. Until John read a newspaper article about synesthesia in later life, he thought that everyone saw the days of the week as various shades of blue. In this program, people with synesthesia describe their experiences and perceptions, as well as the benefits and drawbacks of having a condition in which the barriers between the senses are dissolved.
What do wild animals do when we're not around? Find out with National Geographic's Crittercam. Safely worn by wildlife, Crittercams capture video, sound, and other information, giving students rare views of the private lives of animals. Crittercams help to solve scientific mysteries by providing an animal's eye view. And what scientists learn from Crittercams helps them protect the very animals that wear them. Using Crittercam technology, National Geographic unlocks some of the endangered dugong's secrets. Top of Form
What do wild animals do when we're not around? Find out with National Geographic's Crittercam. Safely worn by wildlife, Crittercams capture video, sound, and other information, giving students rare views of the private lives of animals. Crittercams help to solve scientific mysteries by providing an animal's eye view. And what scientists learn from Crittercams helps them protect the very animals that wear them. In this episode, watch as humpback whales work together to catch their lunches off the coast of Alaska.
What do wild animals do when we're not around? Find out with National Geographic's Crittercam. Safely worn by wildlife, Crittercams capture video, sound, and other information, giving students rare views of the private lives of animals. Crittercams help to solve scientific mysteries by providing an animal's eye view. And what scientists learn from Crittercams helps them protect the very animals that wear them. In this episode, scientists hope to learn more about the sharks' foraging behavior and where they spend their time.
What do wild animals do when we're not around? Find out with National Geographic's Crittercam. Safely worn by wildlife, Crittercams capture video, sound, and other information, giving students rare views of the private lives of animals. Crittercams help to solve scientific mysteries by providing an animal's eye view. And what scientists learn from Crittercams helps them protect the very animals that wear them. Crittercam reveals crucial evidence that could solve the Northwest Hawaiian Islands' mysterious monk seal deaths.
What do wild animals do when we're not around? Find out with National Geographic's Crittercam. Safely worn by wildlife, Crittercams capture video, sound, and other information, giving students rare views of the private lives of animals. Crittercams help to solve scientific mysteries by providing an animal's eye view. And what scientists learn from Crittercams helps them protect the very animals that wear them. In this episode, scientists deploy Crittercam to study the hunting tactics, social behavior and vocalizations of humpback whales in Southeast Alaska.
What do wild animals do when we're not around? Find out with National Geographic's Crittercam. Safely worn by wildlife, Crittercams capture video, sound, and other information, giving students rare views of the private lives of animals. Crittercams help to solve scientific mysteries by providing an animal's eye view. And what scientists learn from Crittercams helps them protect the very animals that wear them. The Crittercam Team travels to Shark Bay hoping to discover why there are a larger number of injured loggerhead turtles than green turtles.
Recapping themes from the prior modules and previewing the junco research of the future, this closing segment reinforces the broad range of important scientific findings involving the Junco. Featuring sound bites from more than a dozen diverse scientists who study juncos, this segment emphasizes the importance of emerging genetic and genomic research tools to complement research in the field. Viewers are reminded to consider all that can be learned from a little backyard bird. Part of Ordinary Extraordinary Junco (Outro).
In this episode, host Jason Silva explores the many layers of language. Some of the exercises and activities focus on the evolution of words, the links between what one sees and hears, and the mysterious communication abilities of twins. Part of the "Brain Games Family Edition."
What do wild animals do when we're not around? Find out with National Geographic's Crittercam. Safely worn by wildlife, Crittercams capture video, sound, and other information, giving students rare views of the private lives of animals. Crittercams help to solve scientific mysteries by providing an animal's eye view. And what scientists learn from Crittercams helps them protect the very animals that wear them. Join the Crittercam team in Cape Washington as they deploy special cameras to reveal how emperor penguins travel vast distances to feed -- and then run a dangerous gauntlet back to their chicks.
Elephants can communicate over long distances using low-frequency sounds that travel both in the air and through the ground. Scientists are studying whether elephants can hear and interpret these ground vibrations. Using amplifiers, speakers, geophones, and video cameras, scientists have designed an experiment to test how elephant herds respond to an alarm call when it is played back through the ground.
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 is woken by the sound of singing coming from the other end of the beach. It is Mei-Lei. As they are walking towards her village, they feel a terrible rumble and see black smoke coming from the mountain. Moko thinks this is his fault, that he has trespassed in the forbidden forest, and wants to apologize. They arrive at the edge of an enormous chasm, a veritable fire pit. To prevent the volcano from erupting, Moko offers it a beautiful seashell, as Mei-Lei's ancestors did. The mountain's rumbling stops and Moko is proud to have learned its language.
Cubelets are magnetic, electronic building blocks, each with a small computer inside, that can be connected in many different ways to move around a table, follow a hand signal, turn on a light, play sounds, or do many other creative tasks. They were developed by Eric Schweikardt and his team at Modular Robotics, with support from the National Science Foundation’s Small Business Innovation Research (SBIR) program. These 21st century building blocks are meant to help kids learn about the basics of robotics while boosting their confidence to solve problems.
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 spent the night up in the giant tree, Moko is woken up by the sound of an arrow piercing through an enormous fruit. Afraid that a giant must be coming, he climbs down the tree and tries to flee, but gets lost in the Amazon Forest. This is when he meets Totemie, a young Amazonian girl who knows the forest better than anyone. She invites Moko to her village and they walk through an incredible maze of plants, roots and trees of all kinds. Without Totemie, Moko would be completely lost. He believes the forest introduced his new friend so that he could learn a few of its secrets.
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