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RESOURCE	GRADE LEVEL	MEDIA TYPE
3D Space: Illusion or Reality? This video excerpt from NOVA’s "The Fabric of the Cosmos: What Is Space?" reveals new data about black holes that has led to a new idea about the universe: Instead of everything being a three-dimensional object, it’s possible that everything is actually just a hologram. Accessibility features: Caption, Transcript	9-12	Video
Aging Diamonds? In this video from Nature, geological detectives use ancient diamonds to learn more about Earth's inner layers. Accessibility features: Transcript	6-12	Video
Air Power: Making a Hovercraft In this video segment adapted from ZOOM, cast members make their own hovercraft and demonstrate how the air leaking out of a balloon can make a plastic plate hover above a table. Accessibility features: Caption, Transcript	K-8	Video
All in the Family This video from the series Faces of America details the process of documenting family history and tracing lineage back through maternal and paternal lines. Accessibility features: Transcript	9-12	Video
Amazon Rainforest This video segment from the Race to Save the Planet teaching module "Saving the Diversity of Life" describes the ecological value of tropical rainforests and explores some of the causes of their destruction. Accessibility features: Caption, Transcript	K-5	Video
Amphibian Research This short video segment from IdahoPTV's D4K explains how frogs help biologists study problems in the environment. Accessibility features: Caption, Transcript	4-6	Video
Amphibians This video segment from IdahoPTV's D4K points out what it means to be cold-blooded. A frog's life cycle is revealed as well as why it croaks, why it hibernates, and how it catches its prey. Accessibility features: Caption, Transcript	4-6	Video
Animals Making a Living For most animals, finding food is a full-time job. This video segment explores the food-finding strategies of a variety of creatures, illustrating the idea that different animals have very different ways of getting enough to eat. Accessibility features: Caption, Transcript	K-5	Video
Arctic Summer See the many birds that spend their summer in the Arctic in this video segment from Nature. Accessibility features: Transcript	6-12	Video
Arctic Tundra This video segment from Wild Europe: "Wild Arctic" explores the struggle for survival in one of Earth's most extreme environments. Accessibility features: Audio Description, Caption, Transcript	3-12	Video
Are Computers Intelligent? This video excerpt from NOVA: “Smartest Machine on Earth” explains why computers can be so good at chess. Accessibility features: Caption, Transcript	6-12	Video
As the Crow Flies In this video from Nature researchers from the University of Washington conduct a long-term experiment to see if crows can pass information down from one generation to the next. Accessibility features: Transcript	8-12	Video
Atomic Structure of an Alloy Learn about the atomic structure of bronze, a copper alloy, in this video excerpt from NOVA: "Hunting the Elements." Accessibility features: Caption, Transcript	6-12	Video
Balloon Brain: Designing a Helmet In this video segment adapted from ZOOM, cast members are challenged to design protective headgear for a water balloon using what they know about the properties of the materials available. Accessibility features: Caption, Transcript	K-8	Video
Bear Necessities This Nature video segment focuses on the four foods most important to the grizzly bears' survival, and it describes the threats to the supply of each of them. Accessibility features: Transcript	6-12	Video
Bear Research In this video segment from IdahoPTV's D4K tag along with two biological researchers as they conduct their research project about bear movements. Accessibility features: Caption, Transcript	4-6	Video
Bears This video segment from IdahoPTV's D4K shows bears' adaptations for eating. Accessibility features: Caption, Transcript	4-6	Video
Bears' Lunch Counter This Nature video segment explores how the relationship between humans and grizzly bears has changed over the course of American History, and it describes the closing of the Yellowstone National Park garbage dumps in the 1970s. Accessibility features: Transcript	6-12	Video
Bears Don't Recognize Boundaries In this video segment from Nature, learn about the problems bears are creating on ranch land surrounding Yellowstone National Park. Accessibility features: Transcript	6-12	Video
Bears in the Schoolyard Learn about the precautions humans must take in the face of a growing grizzly bear population in this video from Nature. Accessibility features: Transcript	6-12	Video
Beavers This video segment explores the world of the beaver, including the biology of the species and, more importantly, its ability to transform an ecosystem for its own benefit. Accessibility features: Caption, Transcript	K-5	Video
Becoming a Fossil This video segment describes how the Australopithecus afarensis skeleton known as Lucy could have been fossilized. Footage courtesy of NOVA: "In Search of Human Origins." Accessibility features: Audio Description, Caption, Transcript	6-12	Video
Beyond Einstein NASA scientists describe some of the ways current science is addressing several of Einstein's fundamental questions and theories in this video adapted from NASA. Accessibility features: Transcript	9-12	Video
Beyond the Present This video from The Human Spark provides a look at humans' unique ability to reflect upon events that have happened in the past and think about things that could possibly happen in the future. Accessibility features: Transcript	5-12	Video
Bianca Goes where the Wind Blows In this video from Cyberchase, Bianca and Mikaela want to fly a kite, so Bianca creates a wind gauge to test the strength of the wind in various parts of the park. Accessibility features: Transcript	3-5	Video
Bird Migration This video segment from IdahoPTV's D4K discusses the purpose of migration and shows researchers and students working together to study bird migration at the Idaho Bird Observatory. Accessibility features: Caption, Transcript	4-6	Video
Birds of Kundha Kulam In this Nature video, learn about the extraordinary impact that birds have on the agriculture of a small Indian community. Accessibility features: Transcript	6-12	Video
Birds of Prey This video segment from IdahoPTV's D4K defines birds of prey and explains what characteristics they have that identify them as a raptor and help them catch their prey. Accessibility features: Caption, Transcript	4-6	Video
Birth of a Tsunami This video excerpt from NOVA: “Japan’s Killer Quake” shows how an undersea earthquake produces a tsunami. Accessibility features: Caption, Transcript	6-12	Video
Body Waste This video segment from IdahoPTV's D4K takes a look at the reasons why body waste keep you healthy and the parts of the body form the waste products, urine, pus, carbon dioxide, gas and feces. Accessibility features: Caption, Transcript	4-6	Video
Body Waste that Protects You This video segment from IdahoPTV's D4K covers the body wastes that protect you: earwax, mucus, tears, sweat and vomit. Accessibility features: Caption, Transcript	4-6	Video
The Brain This video segment from IdahoPTV's D4K explores the anatomy of the brain and how your brain interacts with the rest of your body. Accessibility features: Caption, Transcript	4-6	Video
The Brain in Action This video segment from The Human Spark observes the brains responses to a series of cognitive tests. Accessibility features: Transcript	9-12	Video
Breaking Point: Testing Tensile Strength This video excerpt from NOVA’s "Making Stuff: Stronger" and accompanying demonstration illustrate the toughness and tensile strength of Kevlar® and other everyday materials. Accessibility features: Caption, Transcript	6-12	Video
Building a Cleaner Battery This video excerpt from NOVA’s "Making Stuff: Cleaner" and accompanying activity guide for grades K–8 introduce students to the design and use of batteries and the rapidly developing science of clean energy and clean materials. Accessibility features: Caption, Transcript	6-12	Video
Building a Fence In this Cyberchase video segment, Harry must build a rectangular fence in his grandmother's backyard using fencing of various sizes. Accessibility features: Transcript	3-6	Video
The Business of Bioplastics This video excerpt from NOVA’s "Making Stuff: Cleaner" and accompanying demonstration introduce students to the production and importance of bioplastics, or plastics made from plant or animal products. Accessibility features: Caption, Transcript	6-12	Video
Can a Computer Fly an Airplane? This video excerpt from NOVA shows how the computer system on the A330 airplane can fly the plane safely without a human pilot. Accessibility features: Caption, Transcript	6-12	Video
Challenges of Incubation This video segment from Nature examines American Eagles along the Upper Mississippi River and their struggle to protect their eggs from predators as well as from the cold, extreme weather. Accessibility features: Transcript	2-6	Video
Chimp Politics In this video from the PBS series The Human Spark, host Alan Alda and scientist Franz de Waal observe and compare two alpha-male chimpanzees’ different approaches to sharing at the Yerkes National Primate Research Center in Atlanta. Accessibility features: Transcript	9-12	Video
Clouds and Currents Learn about cloud formations over the Sierra Nevada Mountains in this video from Nature. Accessibility features: Transcript	6-12	Video
Collapse of Sharks This video segment from Nature shows the destructiveness of the shark fin and shark cartilage industries. Accessibility features: Transcript	6-12	Video
Columns: Experimenting with Balloons Watch the ZOOM cast find out how many balloons filled with air and then with water are required to support the weight of a cast member. Accessibility features: Caption, Transcript	3-8	Video
Columns: Experimenting with Paper Cups In this video segment from ZOOM, the cast experiments to see if a bunch of paper cups covered by a piece of cardboard can support the weight of a cast member. Accessibility features: Caption, Transcript	3-8	Video
Columns: Finding the Strongest Shape In this video segment, members of the ZOOM cast experiment by bending and folding sheets of paper into various shapes to see which shape will support the weight of a heavy book. Accessibility features: Caption, Transcript	K-8	Video
Columns: Hillary's Neighborhood In this video segment from ZOOM, Hillary, from Randolph, MA, takes us on a tour of the columns in her neighborhood. Accessibility features: Caption, Transcript	K-8	Video
Cooperation Over Competition In this video from The Human Spark, scientists discuss what may be the uniquely “human spark” which separates us from animals: our ability to communicate, cooperate, and collaborate with others. Accessibility features: Transcript	9-12	Video
Coral Reefs This video segment from Nature explores the unique status of Cuba’s coral reefs. Accessibility features: Transcript	8-12	Video
Cosmic Origin Spectrograph This video from NASA features the Cosmic Origin Spectrograph (COS), which allows scientists to use spectrographic analysis to assess the composition of intergalactic material. Accessibility features: Transcript	9-12	Video
A Cow’s Digestive System Learn how a cow eats and digests food in this video segment from Nature. Accessibility features: Transcript	6-12	Video