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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
Astronauts Speak: Gene Cernan In this audio resource from NOVA, astronaut Gene Cernan recounts his harrowing experience during America's first attempt to do work in outer space. Accessibility features: Transcript	3-12	Audio
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
Creating an Island Paradise In this video segment from Nature, learn the geological process by which the next Hawaiian island will be formed. Accessibility features: Transcript	6-12	Video
Crime Scene Investigation This video segment from IdahoPTV's D4K explores the tools and forensic science that crime scene investigators use to collect evidence to help solve crimes, and study animals, archaeology and paleontology. Accessibility features: Caption, Transcript	4-6	Video
A Day in the Life of a Neanderthal In this video segment from The Human Spark, host Alan Alda looks at some of the similarities and differences between the Neanderthal way of life and that of modern humans. Accessibility features: Transcript	9-12	Video
Deep-Sea Vents and Life's Origins Deep-sea vents are home to life forms that do not rely on the Sun's energy. They depend instead on energy from volcanoes on the ocean floor. This video segment adapted from NOVA hypothesizes that life on Earth may have begun in this extreme environment. Accessibility features: Audio Description, Caption, Transcript	3-12	Video
Deep Sea Vents and Life's Origins Deep-sea vents are home to strange, luminescent life forms that thrive through chemosynthesis. This video segment from NOVA: "Volcanoes of the Deep" hypothesizes life's beginnings in this extreme environment. Accessibility features: Audio Description, Caption, Transcript	3-12	Video
Defy Gravity! Balancing Balls on Air In this video segment adapted from ZOOM, cast members use a hair dryer to balance a ball in a stream of air, seemingly defying gravity. Accessibility features: Caption, Transcript	K-8	Video
Defy Gravity! Centripetal Force How can you keep a ball from falling out of a jar if the jar is upside down? Watch the ZOOM cast use centripetal force to meet this challenge. Accessibility features: Caption, Transcript	3-8	Video
Density and Buoyancy: Experimenting with Club Soda In this video segment adapted from ZOOM, the cast discovers that gas-filled bubbles act like life jackets for raisins, making them buoyant. Accessibility features: Caption, Transcript	K-8	Video
Density and Buoyancy: Mixing Hot and Cold Water Watch warm water float on top of cold water in this video segment adapted from ZOOM. Accessibility features: Caption, Transcript	K-8	Video
Density and Buoyancy: Pouring Air into Water This video segment adapted from ZOOM offers a clever demonstration of buoyancy by showing how to pour a cup of air into a cup filled with water. Accessibility features: Caption, Transcript	K-8	Video
Density and Buoyancy: Testing Liquids Will a grape float in oil? Will a metal nut sink in corn syrup? Watch as the ZOOM cast tests the buoyancy of a variety of liquids and objects. Accessibility features: Caption, Transcript	K-8	Video
Desert Biome This video segment from NOVA: "A Desert Place" describes the physical characteristics and organisms that define the desert biome. Accessibility features: Audio Description, Caption, Transcript	3-12	Video
Desert Habitat This video segment from IdahoPTV's D4K defines warm and cold (high) deserts, and describes some of the plants and animals found there as well as their adaptations for living in each type of desert. Accessibility features: Caption, Transcript	4-6	Video
Design for Function In this video segment from Cyberchase, the CyberSquad designs an invention that will help them cross a swamp and also reach the top of a tall cliff. Accessibility features: Caption, Transcript	3-5	Video
Designing a Puff Mobile The air you exhale can power a puff mobile. Watch as the ZOOM cast races their air-powered designs to see which design features are the most successful. Accessibility features: Caption, Transcript	K-5	Video
Designing Balloon Cars Can the air in a balloon power a car? Watch students from Weston, Massachusetts, demonstrate their balloon car designs in this video adapted from ZOOM. Accessibility features: Caption, Transcript	3-8	Video
Designing Future Cities: Alternative Energy In this video segment adapted from ZOOM, visit a class as they design a city of the future that will use solar, wind, and water power to fuel its economy. Accessibility features: Caption, Transcript	3-8	Video
Designing the Citigroup Skyscraper This video segment adapted from Thinking Big, Building Small shows how a structural engineer overcame the challenge of building New York's Citigroup skyscraper over a church. Accessibility features: Caption, Transcript	3-8	Video
Desirable Breeding Traits in Cattle This video from Nature offers a description of desirable traits in beef and dairy cattle. Accessibility features: Transcript	6-12	Video
Destructive Forces In this video segment from Nature, scientists question how animals mysteriously survive natural disasters. Accessibility features: Transcript	6-12	Video
The Developing Brain This video from The Human Spark illustrates the difference between the brain growth of man’s early ancestors and today’s modern infant. Accessibility features: Transcript	9-12	Video
Developing the Periodic Table This video excerpt from NOVA: "Hunting the Elements" looks at how early chemists developed the periodic table of elements. Accessibility features: Caption, Transcript	6-12	Video
Diamond Formation An expert describes the carbon composition of diamonds, as well as the conditions necessary for diamond formation in this video segment from Nature. Accessibility features: Transcript	6-12	Video
Diamonds Everywhere This Nature video offers an introduction to the socio-economic value of diamonds. Accessibility features: Transcript	6-12	Video
Different Breeds of Cattle In this video segment from Nature, learn about six different breeds of cattle. Accessibility features: Transcript	6-12	Video
A Different Kind of Fuel In this segment from Curious, learn about creating energy from solar rays to meet the growing energy needs of the world. Accessibility features: Transcript	6-12	Video
Dinosaurs This video segment from IdahoPTV's D4K shows us what paleontologists think dinosaurs looked like, what they ate, and why they might have disappeared. We see paleontologists at work studying dinosaurs fossils. Accessibility features: Caption, Transcript	4-6	Video
Duck Development This video segment from NOVA: "The Shape of Things" follows the growth of a duck embryo, from a single fertilized egg cell to a complex, hatching duckling. Accessibility features: Audio Description, Caption, Transcript	6-8	Video
Dust-Proofing a Mars Rover Enter the lab of NASA scientist Dr. Carlos Calle to see how systems are being developed to keep planetary rover solar panels dust-free, in this video from NASA EDGE. Accessibility features: Transcript	6-12	Video
Earthquake! When Plates Collide This video excerpt from NOVA explains the concept of plate tectonics and how it causes earthquakes. Accessibility features: Caption, Transcript	6-12	Video
Earthquakes This video segment from IdahoPTV's D4K describes what causes earthquakes, how scientists measure them, where they occur and how to be prepared for one. Accessibility features: Caption, Transcript	4-6	Video
Ecology This video segment from IdahoPTV's D4K defines ecology and ecosystems and explains how all living and non-living things in an ecosystem interact and depend on the energy of the sun. Accessibility features: Caption, Transcript	4-6	Video
Electricity This video segment from IdahoPTV's D4K explains some electrical vocabulary and follows the route of electricity from its generation to the home. Accessibility features: Caption, Transcript	4-6	Video
Elk This video segment from IdahoPTV's D4K describes the yearly life cycle of elk and follows them from their winter habitat to their summer habitat and back. Accessibility features: Caption, Transcript	4-6	Video
Endangered Species This video segment from IdahoPTV's D4K explores the many reasons why animals become endangered or become extinct. Accessibility features: Caption, Transcript	4-6	Video
Evolutionary Roots of Language This video excerpt from NOVA scienceNOW looks at how language and tool-making may have coevolved. Accessibility features: Caption, Transcript	6-12	Video
Evolution of Camouflage This video segment from Evolution: "Darwin's Dangerous Idea" illustrates the remarkable camouflage of a praying mantis against its leafy backdrop. Accessibility features: Caption, Transcript	3-12	Video
Evolving Ideas: How Do We Know Evolution Happens? This video from Evolution focuses on one of the several lines of evidence for evolution -- fossils, highlighting the evolution of whales from land-dwelling mammals to the aquatic creatures we know today. Accessibility features: Caption, Transcript	6-12	Video
Exoplanets This video segment from IdahoPTV's D4K shows the tools scientists use to search for exoplanets and describes possible characteristics a planet might have to support life. Accessibility features: Caption, Transcript	4-9	Video
Extracting Mummy DNA This video segment adapted from NOVA explains how a DNA sample is taken from a 5,000-year-old mummy and what we can learn from it. Accessibility features: Caption, Transcript	6-12	Video
Extreme Measures This video adapted from Nature describes efforts to protect salmon by killing or relocating species that prey on salmon. Accessibility features: Transcript	8-12	Video
Falconry This video segment from IdahoPTV's D4K defines falconry and shows some of the equipment used for training a falcon to hunt. Accessibility features: Caption, Transcript	4-6	Video
Feasting on the Salmon Run This video from Nature focuses on the annual “salmon run,” when brown bears descend on Alaska’s rivers to fish in rivers teeming with salmon swimming upstream to spawn. Accessibility features: Transcript	8-12	Video
Feeding Time In this video from Nature, watch how ravens’ smarts can be observed in many situations, such as when they hunt and store food. Accessibility features: Transcript	6-12	Video
Finding the Dew Point In this video from Cyberchase, the CyberSquad learns to keep track of both air temperature and humidity so they can predict when fog will appear. Accessibility features: Transcript	3-5	Video
Fish Research This video segment from IdahoPTV's D4K explains the Chinook salmon's life cycle in the Pacific Northwest and why it is an endangered species. A fisheries biologist takes students through some steps of fish research with explanations of the kinds of information biologists gather to perhaps help manage fish recovery. Accessibility features: Caption, Transcript	4-6	Video
Fish with Fingers In this video segment from Evolution: "Great Transformations," paleontologist Jenny Clack explains that vertebrates evolved fingers before they invaded land. Accessibility features: Audio Description, Caption, Transcript	6-12	Video
A Fission Chain Reaction This video excerpt from NOVA: "Hunting the Elements” uses ping-pong balls and mousetraps to demonstrate nuclear fission. Accessibility features: Caption, Transcript	6-12	Video
Fledglings Witness eaglets begin to fly in this video segment from Nature. Accessibility features: Transcript	2-6	Video