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RESOURCE	GRADE LEVEL	MEDIA TYPE
Eco Electronics In this video adapted from DESIGN SQUAD, meet engineers who help protect the environment by recycling and using biodegradable materials. Accessibility features: Caption	5-12	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
The Effect of Jet Streams on Climate This video produced by ThinkTV visualizes jet stream patterns around the world and explores their effect on weather systems and regional climates. Accessibility features: Caption	6-12	Video
The Effect of Land Masses on Climate In this video produced by ThinkTV, explore the effects of land masses on local climate conditions, and learn about regional impacts of land-atmosphere interactions. Accessibility features: Caption	6-12	Video
The Effect of Sea Surface Temperature on Hurricanes In this video segment adapted from NOVA scienceNOW, scientists examine the link between rising sea surface temperature and more intense hurricanes. Accessibility features: Caption	9-12	Video
The Effects of Atmospheric Particles on Climate This video segment produced by ThinkTV explains that particles suspended in the atmosphere, or aerosols, can have a surprising effect on regional warming and cooling, adding to the complexity of global climate change. Accessibility features: Caption	6-12	Video
The Effects of Pesticides on Children Follow anthropologist Elizabeth Guillette as she studies the effects of pesticides on children in a farming community in Mexico, in this video segment adapted from Playing with Poison. Accessibility features: Caption	9-12	Video
Einstein's Thoughts on the Ether Do light waves travel through the ether like waves on a lake travel through water? In this video segment adapted from NOVA, a young Albert Einstein grapples with this question while examining the speed of light. Accessibility features: Caption	6-12	Video
Electric Girl Anna loves electricity. Watch her construct a homemade flashlight and show off her new, electrifying hairdo in this video segment from ZOOM. Accessibility features: Caption	3-8	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
The Electromagnetic Spectrum: FRONTLINE This video segment adapted from FRONTLINE introduces the electromagnetic spectrum and explains how the various types of electromagnetic waves are distinguished by the amount of energy each wave carries. Accessibility features: Caption	6-12	Video
The Electromagnetic Spectrum: NASA From radio waves to gamma rays, this video segment from NASA introduces the seven categories of the electromagnetic spectrum and how each type of radiation is part of our everyday lives. Accessibility features: Caption	3-12	Video
Electronic Gadgets Two kids learn some surprising facts about the parts in their computer game, in this animated video from LOOP SCOOPS. Accessibility features: Caption	1-4	Video
Electrophoresis and Gel Analysis In this animation produced by WGBH and Digizyme, Inc., see how molecules of DNA are separated using gel electrophoresis, and how this process enables scientists to compare the molecular variations of two or more DNA samples. Accessibility features: Caption	9-12	Video
The Elements: Forged in Stars The story of how elements from lithium to uranium are created by stars is illustrated through animation and a hands-on periodic table in this video segment adapted from NOVA. Accessibility features: Caption	6-12	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
Eluting Red Fluorescent Protein From the Column This video produced by WGBH demonstrates how to properly elute a red fluorescent protein after it has been bound in a chromatography column. Accessibility features: Caption	9-12	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
Endocrine Disruptor Hypothesis Scientists discuss whether or not endocrine disrupting chemicals, which may cause birth defects and other health concerns, should be controlled in the absence of conclusive proof, in this video segment adapted from FRONTLINE: "Fooling with Nature." Accessibility features: Caption	6-12	Video
Energy Audit Technology Watch students as they conduct an energy audit on a home and gain hands-on experience for a career in the green energy industry, in this video adapted from ATETV. Accessibility features: Caption	9-12	Video
Energy Flow in the Coral Reef Ecosystem This video segment, adapted from NOVA, describes the energy flow in a coral reef, including its food web. Accessibility features: Caption	3-12	Video
Energy Transfer in a Trebuchet On NOVA, a team of carpenters, timber framers, engineers, and historians recreate a medieval throwing machine called a trebuchet. This adapted video segment explores how understanding energy transfer informs their design. Accessibility features: Caption	6-12	Video
Engineering Biofuels In this video segment adapted from KQED's QUEST, find out how synthetic biologists use the techniques of metabolic engineering and directed evolution to make more effective biofuels. Accessibility features: Caption	9-12	Video
Engineering for the Red Planet In this video segment from NASA, robotics researcher Ayanna Howard uses engineering to improve the intelligence of robots in space exploration. Accessibility features: Caption	6-12	Video
Engineering Technology: Electronic Maintenance Engineer See what an electronic maintenance engineer does to keep his factory running smoothly, in this video adapted from Pathways to Technology. Accessibility features: Caption	9-12	Video
Engineering Technology: Value Engineer In this video adapted from Pathways to Technology, learn how one woman's community college education helped her transition to a career in laser technology, working on night-vision products. Accessibility features: Caption	9-12	Video
Jennifer Hannaford In this video from Science City, meet Jennifer Hannaford, a forensic scientist. She describes the steps to recover and analyze fingerprints to help solve crimes. She also discusses common attributes between art and science. Accessibility features: Caption	6-12	Video
Environmentalist Bill McKibben, 1990 In this 1990 archival news footage from Cambridge Community Television, environmentalist Bill McKibben speaks about the possible effects of climate change at an Earth Day celebration in Cambridge, MA. Accessibility features: Caption	6-12	Video
Environmental Justice: Opposing Industrial Hog Farming Learn about the impact that large-scale hog farming has had on one minority community in North Carolina and how residents fought back to protect their water supply and property, in this video segment adapted from Earthkeeping: "Toxic Racism." Accessibility features: Caption	6-12	Video
Environmental Justice: Opposing a Toxic Waste Incinerator In this video segment adapted from Earthkeeping: "Toxic Racism," learn how farm workers and farm owners formed a rare alliance in an effort to block the use of an incinerator in their Latino community by suing a major corporation for environmental discrimination. Accessibility features: Caption	6-12	Video
Environmental Justice: Opposing a Toxic Waste Landfill This video segment adapted from Earthkeeping: “Toxic Racism” talks about the early days of the environmental justice movement and how the health of minority communities can be compromised by the disproportionate numbers of hazardous waste facilities located there. Accessibility features: Caption	6-12	Video
Environmental Justice in Dallas Follow a Dallas community's fight to receive federal Superfund status to clean up the damage from a high-polluting lead smelter, in this video segment adapted from Earthkeeping: "Toxic Racism." Accessibility features: Caption	6-12	Video
Epigenetics In this video segment adapted from NOVA scienceNOW, learn how what you eat, drink, or smoke may affect the instructions your epigenomes send to your genes, and as a result, change how your DNA is expressed. Accessibility features: Caption	9-12	Video
Eradicating Malaria with DDT Learn about the role of the controversial chemical DDT in the worldwide malaria eradication program, and hear from an expert who advocates bringing it back, in this video segment adapted from Rx for Survival. Accessibility features: Caption	9-12	Video
Erick Ordoñez: Materials Engineer In this video from Design Squad Nation, NASA materials engineer Erick Ordoñez explains how he makes sure that the materials NASA sends into space are problem-free. Accessibility features: Caption	4-8	Video
Kerri-Ann Richard In this video from Science City, Kerri-Ann Richard, an environmental engineer, describes how she became interested in the field and why it is important to clean up the environment by removing contaminants from soil and ground water. Accessibility features: Caption	6-12	Video
Ethanol Biofuel In this video segment adapted from NOVA, learn about one scientist's idea for using biotechnology to make ethanol a more efficient alternative to gasoline. Accessibility features: Caption	9-12	Video
The Ethics of Preimplantation Genetic Diagnosis In this video excerpt from NOVA, learn about the advantages, disadvantages, and ethical implications of preimplantation genetic diagnosis, or PGD, a technique used to screen embryos created through in vitro fertilization for diseases. Accessibility features: Caption	9-12	Video
Europa Jupiter System Mission This video from NASA introduces a proposed mission to study potential habitable worlds around gas giants such as Jupiter. Accessibility features: Caption	6-12	Video
An Everglades Visit In this adapted video segment, ZOOM guest Tommy takes us on a tour of the Florida Everglades. He describes what makes a wetland biome unique, including the soil, precipitation, and biodiversity. Accessibility features: Caption	K-8	Video
Everyday Radiation How much radiation are we exposed to every day? Find out in this video segment adapted from FRONTLINE. Accessibility features: Caption	6-12	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
The Evolution of the Kuiper Belt This video from NASA explores how the structure of the Kuiper belt can provide insight into the formation of the solar system and indicate the presence of planets. Accessibility features: Caption	9-12	Video
Evolution of the Moon This video from NASA looks at how Earth's moon has changed since its formation about 4.5 billion years ago. Accessibility features: Caption	9-12	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
Expedition 8 Crew Talks to Students in Japan In this video segment adapted from NASA, students in Matsuyama City, Japan, interview Expedition 8 Commander and NASA Science Officer Mike Foale and Flight Engineer Alexander Kaleri about life and work aboard the International Space Station. Accessibility features: Caption	K-8	Video
Experimenting with a Glass Xylophone In this video segment adapted from ZOOM, the cast investigates how the pitch of sound changes when they strike a variety of glasses filled with different amounts and types of liquids. Accessibility features: Caption	3-8	Video
Experimenting with a Lemon Battery Can a fresh lemon power a digital clock? In this video segment adapted from ZOOM, the cast shows you how this can be done and, in the process, discover how kids can be a part of an electric circuit. Accessibility features: Caption	3-8	Video
Experimenting with a Pendulum In this video segment, members of the ZOOM cast experiment with a pendulum and discover what they need to do to make the pendulum complete one back-and-forth swing in five seconds. Accessibility features: Caption	3-8	Video
Exploring Conductivity: Kid Circuits In this video segment adapted from ZOOM, cast members join hands and become electron conductors to complete an electric circuit. Accessibility features: Caption	3-8	Video
Exploring Windmill Design In this video segment adapted from ZOOM, cast members are challenged to design a windmill that can be powered by a hair dryer. Accessibility features: Caption	3-8	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
Climate Wisconsin: Extreme Heat Learn how extreme heat—which is projected to occur more frequently in our changing climate—disproportionately affects the urban elderly and the poor in this multimedia video produced by the Wisconsin Educational Communications Board. Accessibility features: Caption	6-12	Video
Extreme Temperatures on the Moon In this video segment adapted from Interactive NOVA, astronaut John Young experiences extreme temperatures on the Moon that are a result of the Moon's low gravity and lack of atmosphere. Accessibility features: Caption	3-12	Video
Factory Farms and Organic Alternatives In this video adapted from the series Race to Save the Planet, learn how agricultural pesticides can help increase the amount of food produced, but can also damage soil and wildlife in the process. See how organic farming addresses some of these challenges. Accessibility features: Caption	6-12	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
Farm Nitrates in the Water Supply Learn how nitrate runoff from farm fertilizers can negatively impact human health and how a water treatment plant is tackling the challenge, in this video excerpted from Big River. Accessibility features: Caption	6-12	Video
Farm Solutions to Water Pollution In this KET video from Common Ground and Cleaner Water, Tribby Vice, a Kentucky farmer, talks about the changes he has made on his farm to protect the water quality of the stream running through his property and the watershed in which he lives. Accessibility features: Caption	5-12	Video
Fastest Glacier In this video segment adapted from NOVA scienceNOW, scientists in western Greenland explain how a glacier there is shrinking and moving faster due to increased melting. Accessibility features: Caption	6-12	Video
Fever! This video describes the role of the brain in regulating body temperature and how sometimes fever is employed to fight off infection. Accessibility features: Audio Description, Caption	6-8	Video
Field Research on Glacial Change In this video segment produced by ThinkTV, learn how scientists take measurements in the field to gain an overall understanding of changes in local water supplies, and how they may relate to changes in the mass of nearby glaciers. Accessibility features: Caption	6-12	Video
Field Service Engineer Meet a field service engineer and hear about his work, education, and internship experiences, in this video adapted from ATETV. Accessibility features: Caption	9-12	Video
Fire Safety in High Rises This video segment adapted from NOVA explains how the sprinkler revolutionized fire safety and also features developments in fire-safety design for high-rise buildings. Accessibility features: Caption	6-12	Video
First Spacecraft at Uranus Learn about some of the discoveries made by the Voyager 2 spacecraft during its 1986 trip to Uranus in this video from NASA Jet Propulsion Laboratory. Accessibility features: Caption	9-12	Video
Firth of Forth Cantilever Bridge This video segment from Building Big: "Bridges" demonstrates the basic design of a cantilever bridge by looking at Scotland's Firth of Forth Railway Bridge. Accessibility features: Caption	3-12	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
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
Flight This video segment from IdahoPTV's D4K takes you on a flight with a young student and a pilot as you learn about the 4 aerodynamic forces which are present when air is moving past an object such as an airplane. Accessibility features: Caption, Transcript	4-6	Video
Flood: Farming and Erosion In this video segment adapted from NOVA, scientists investigate how farming along the Mississippi River impacts floods and what can be done about it. Accessibility features: Caption	3-12	Video
Flood Plain and Higher Ground Habitats This video segment from NatureScene features the area of the Congaree Swamp where the high ground and the flood plain meet. Learn how a few feet of difference in elevation on a floodplain can yield drastic changes in what you’ll find living there. Accessibility features: Caption	3-8	Video
Floral Arrangements Explore a few of the ways plants pollinate each other in this video segment from Sexual Encounters of a Floral Kind. Accessibility features: Audio Description, Caption, Transcript	6-12	Video
Climate Wisconsin: Fly Fishing Learn how fly fishing and trout are impacted by Wisconsin’s changing climate in this multimedia video produced by the Wisconsin Educational Communications Board. Accessibility features: Caption	6-12	Video
Food Is Fuel This video excerpt from NOVA scienceNOW examines the energy and nutrient content of a cupcake and a rat. Accessibility features: Caption, Transcript	6-12	Video
Food Justice In this adaptation of a video that high school students created in collaboration with the Environmental Justice League of Rhode Island, learn "what's whack" about our current food systems and the many actions individuals can take to address these issues. Accessibility features: Caption	6-12	Video
Food Web This short video segment from IdahoPTV's D4K illustrates how a food web works. Accessibility features: Caption, Transcript	4-6	Video
Force and Motion This video segment from IdahoPTV's D4K explains and gives examples of Sir Isaac Newton's 3 Laws of Motion using the rides at an amusement part. Accessibility features: Caption, Transcript	4-6	Video
Forensic DNA Analysis This video segment from NOVA: "The Killer's Trail" investigates the potential for DNA evidence to solve murder cases, even those from the distant past. Accessibility features: Caption	9-12	Video
Forests This video segment from IdahoPTV's D4K describes rain, temperate and boreal forests and some of the animals that live in them. Accessibility features: Caption, Transcript	4-6	Video
Fossil Evidence of Bipedalism This video segment adapted from NOVA shows how scientists use the fossil record to trace when early human ancestors and related species began walking on two legs instead of four, and to determine whether they were more apelike or human in appearance. Accessibility features: Caption	8-12	Video
Fossils This video segment from IdahoPTV's D4K explains how fossils are formed, discusses the Hagerman Horse fossil found in Idaho. It describes the tools Paleontologists use and why they study fossils. Accessibility features: Caption, Transcript	4-6	Video
Fracking In this video segment adapted from Need to Know, learn about the controversial method of extracting natural gas known as hydraulic fracturing, or fracking, and how some residents who live near drill sites are concerned that it's polluting their water. Accessibility features: Caption	9-12	Video
Franklin Chang-Díaz: Rocket Scientist This video segment adapted from NOVA scienceNOW profiles Franklin Chang-Díaz, a scientist who is working on plasma-powered rockets and was NASA's first Latin American astronaut. Accessibility features: Caption	6-12	Video
Frogs A boy named Ben learns about the dangers of invasive species—in this case, frogs—in this animated video from LOOP SCOOPS. Accessibility features: Caption	1-4	Video
From the Cystic Fibrosis Gene to a Drug In this video excerpt from NOVA, find out how the discovery of a gene defect has led to the development of a new drug to treat patients with cystic fibrosis. Accessibility features: Caption	9-12	Video
From DNA to Protein This narrated animation schematically shows the process of protein synthesis. Adapted from Interactive NOVA: "Secret of Life." Accessibility features: Caption	9-12	Video
From Seed to Flower Watching plants grow is like watching paint dry: It happens so slowly that the changes are imperceptible from one moment to the next -- and yet the end results are dramatic. This video segment shows just how amazing plant development can be by depicting various phases of the process using time-lapse photography. Footage from NOVA: "The Shape of Things." Accessibility features: Caption	K-5	Video
Frozen Frogs This video segment adapted from NOVA scienceNOW shows how the common wood frog freezes solid every winter, an adaptation that allows the organism to survive the cold winter. Accessibility features: Caption	6-12	Video
The Function of Sleep In this video segment adapted from NOVA scienceNOW, discover what researchers are learning about sleep by examining the dreams of rats. Accessibility features: Caption	6-12	Video
Fusion: Testing the First Hydrogen Device This video segment adapted from AMERICAN EXPERIENCE features original footage of the U.S. test of the first hydrogen device, code-named "Mike", that would trigger thermonuclear fusion. Accessibility features: Caption	6-12	Video
Fusion: The Hydrogen Bomb Just after World War II, nuclear scientists turned their attention from fission to fusion. This video segment adapted from AMERICAN EXPERIENCE looks at the beginnings of thermonuclear power generation. Accessibility features: Caption	6-12	Video
Galileo: Discovering Jupiter's Moons This video segment adapted from NOVA shows how Galileo, using his newly developed refracting telescope, observed four of Jupiter's moons, the first astronomical bodies to be discovered since ancient times. Accessibility features: Caption	3-12	Video
Galileo on the Moon Watch Apollo 15 astronaut David Scott perform Galileo's falling objects experiment on the Moon in this video segment from NASA. Accessibility features: Caption	3-12	Video
Galileo on the Moon Watch Apollo 15 astronaut David Scott perform Galileo's falling objects experiment on the Moon in this video segment from NASA. Accessibility features: Caption	6-12	Video
Galileo's Big Mistake Scientists don't always get it right. This video segment adapted from NOVA looks at Galileo's failed theory for the motion of the tides. Accessibility features: Caption	6-12	Video
Galileo's Telescope The invention of the telescope helped change our understanding of the universe. This video segment adapted from NOVA looks at Galileo's contribution to this technology. Accessibility features: Caption	6-12	Video
Galileo's Thought Experiment How can Earth move through space without our feeling its motion? This video segment adapted from NOVA answers this question by dramatizing one of Galileo's thought experiments. Accessibility features: Caption	6-12	Video
Galileo: Sun-Centered System In the early 1600s, most people believed that the Sun revolved around a stationary Earth. This video segment adapted from NOVA tells how Galileo proved that the Sun, not Earth, is at the center of our universe. Accessibility features: Caption	3-12	Video
Galileo: Sunspots This video segment adapted from NOVA shows how Galileo used his telescope to carefully observe and study sunspots. Accessibility features: Caption	3-12	Video
Gamma-ray Burst Theories This video segment from Swift: Eyes through Time introduces and explains theories of the origin of gamma-ray bursts. Accessibility features: Caption	5-8	Video
Garbage A boy named Oliver learns how to reduce the amount of trash he discards, in this animated video from LOOP SCOOPS. Accessibility features: Caption	1-4	Video