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RESOURCE	GRADE LEVEL	MEDIA TYPE
Anglerfish This video segment from NOVA: "Animal Imposters" shows the lightning-fast strike of the anglerfish. Accessibility features: Audio Description, Caption	6-8	Video
Animal Defenses In nature, survival is the name of the game. This video segment explores the world of animal defense and shows that predators don't always have the upper hand. Accessibility features: Audio Description, Caption	K-8	Video
Animal Hearing This video segment discusses the physical adaptations that give several nocturnal animals a heightened sense of hearing. Footage from NOVA: "Mystery of the Senses: Hearing." Accessibility features: Audio Description, Caption	3-8	Video
Arctic Climate Perspectives This video, adapted from material provided by the ECHO partners, describes how global climate change is affecting Barrow, Alaska. Accessibility features: Audio Description, Caption	6-9	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 We Alone? This video segment adapted from NOVA features a variety of scientific perspectives on the age old question, "Are we alone in the universe?" Animations make vivid the improbability that we could intercept a radio wave signaling extra terrestrial intelligence. Accessibility features: Audio Description, Caption	6-12	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
Bee Navigation This video segment from NOVA: "The Mystery of Animal Pathfinders" explores honeybee communication and navigation. Accessibility features: Audio Description, Caption	6-8	Video
Beneath the Waters of Cocos Island The nutrient-rich waters surrounding Cocos Island set the stage for astounding predator-prey interactions, as seen in this video segment from NOVA: "Island of Sharks." Accessibility features: Audio Description, Caption	6-8	Video
Biome in a Baggie This ZOOMSci video segment shows how to create self-contained environments and explore how plants grow under different conditions. Accessibility features: Audio Description, Caption	K-8	Video
Caves: Extreme Conditions for Life This video segment adapted from NOVA raises the provocative idea that if life can exist in the most extreme environments on Earth — such as in dark, toxic caves — then perhaps living things can also survive in harsh environments on other planets. Accessibility features: Audio Description, Caption	6-12	Video
Cell Differentiation In this video segment from The Secret of Life school video, "Sex and the Single Gene" follow as a single fertilized egg cell divides, differentiates, and assembles into the tissues and organs of a new organism. Accessibility features: Audio Description, Caption	6-12	Video
Common Past, Different Paths This time-lapse microphotography of developing embryos shows the common ancestry of all vertebrates. Footage from NOVA: "Odyssey of Life." Accessibility features: Audio Description, Caption	K-8	Video
Dating Lava Flows on Mauna Loa Volcano, Hawaiʻi In this video segment adapted from NOVA, scientists search for carbonized remains of plants preserved in lava flows to find out how long it has taken rain forests on Hawaiʻi to regenerate after a volcanic eruption. Accessibility features: Audio Description, Caption	3-12	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
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
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
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
The Fierce Humboldt Squid Historically, the Humboldt squid has roamed the waters of the Humboldt Current, ranging from the southernmost tip of South America to California. In this video from QUEST produced by KQED, find out how they have been able to survive and thrive in their expanding range. Accessibility features: Audio Description, Caption	5-12	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
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
From the Heart This video segment describes the basics of the circulatory system: how the heart pumps the blood that carries oxygen and nutrients throughout the body. Accessibility features: Audio Description, Caption	6-8	Video
Gene Control The development of creatures that appear to have nothing in common is directed by a surprisingly small number of genes. In this video segment, learn about the power of master control genes. Footage from The Secret of Life: "Birth, Sex & Death." Accessibility features: Audio Description, Caption	6-12	Video
Germinator This ZOOMSci video segment teaches you how to germinate seeds in a plastic bag and helps you understand some of the factors that influence the germination process. Accessibility features: Audio Description, Caption, Transcript	K-8	Video
The Grand Canyon: Conservation and Development This video segment adapted from NOVA explores the effects of the Glen Canyon Dam on the beaches, wildlife, and vegetation of the Colorado River. Accessibility features: Audio Description, Caption	3-12	Video
How Cancer Cells Grow and Divide This animation from NOVA: "Battle in the War on Cancer: Breast Cancer" describes how oncogenes cause cancer and how cancerous cells can spread throughout the body. Accessibility features: Audio Description, Caption, Transcript	6-12	Video
How Did Life Emerge Here? This video segment adapted from NOVA describes the emergence of life on the islands of Hawaiʻi from a barren volcanic platform under the ocean waves to the rich explosion of life that covers the many climate zones of the islands today. Accessibility features: Audio Description, Caption	3-12	Video
Human Genome Project This video segment from NOVA: "Cracking the Code of Life" looks at the meaning and significance of the effort to decode the human genome. Accessibility features: Audio Description, Caption	6-12	Video
Immune Cells in Action In this video segment from The Secret of Life Teaching Modules: "Nothing to Sneeze At: Viruses," watch as a virus attacks a cell, and learn how the immune system reacts to this onslaught. Accessibility features: Audio Description, Caption	6-12	Video
Ingredients for Life: Carbon This video segment adapted from NOVA illustrates why carbon is at the center of life on Earth. It also asks whether carbon-based life might exist on other planets. Accessibility features: Audio Description, Caption	6-12	Video
Ingredients for Life: Water This video segment adapted from NOVA goes on a whimsical journey in search of life forms thriving in extreme conditions on Earth and in outer space. Animations show ice on Jupiter's moon, Europa, and signs that water once existed on Mars. Accessibility features: Audio Description, Caption	3-12	Video
Marathon Migrators This video segment from NOVA: "The Mystery of Animal Pathfinders" explores how the migratory patterns of shorebirds have evolved to coincide with the spawning of horseshoe crabs. Accessibility features: Audio Description, Caption	6-8	Video
Masters of Disguise In the face of danger, what's a spineless animal to do? This video segment introduces the concept of camouflage -- how animals achieve it and how this form of disguise benefits both predators and prey. Footage from NOVA: "Animal Impostors." Accessibility features: Audio Description, Caption, Transcript	K-12	Video
Metamorphosis: Change of Plans All animals develop and grow over time. The animals in this video segment, however, undergo very dramatic changes on their way to adulthood -- a developmental process known as metamorphosis. Accessibility features: Audio Description, Caption, Transcript	K-5	Video
Mitosis This video segment, adapted from the Interactive Secret of Life videodisc, explains the stages of mitosis, the process of dividing equally a cell's massive jumble of DNA just prior to cell division. Accessibility features: Audio Description, Caption	6-12	Video
More Than an Image This video segment explores how humans perceive the world through vision. Footage from NOVA: "Mystery of the Senses: Vision." Accessibility features: Audio Description, Caption	3-8	Video
Photosynthesis This video segment from Interactive NOVA: "Earth" looks at photosynthesis, the chemical process plants use to make their own food. Accessibility features: Audio Description, Caption, Transcript	3-12	Video
The Power of Touch This video segment explores the role of touch in the development of young animals, including humans. Footage from NOVA: "Mystery of the Senses: Touch." Accessibility features: Audio Description, Caption	3-8	Video
The Red Queen An example of the Red Queen hypothesis, the sexual population of Mexican Poeciliid fish are able to keep up with a changing environment, while the asexual populations are not as successful. From Evolution: "Why Sex?" Accessibility features: Audio Description, Caption	6-12	Video
Ruminants Why do cows chew their cud? This video segment from Secret of Life: "Accidents of Creation" describes the physical adaptations that have made ruminants some of the most important, and certainly the most efficient, plant eaters on earth. Accessibility features: Audio Description, Caption	6-12	Video
Scent of an Alewife This video segment from NOVA: "Sea Behind the Dunes" tracks the return of spawning alewife fish from the open ocean back to the freshwater streams and ponds where they were born. Accessibility features: Audio Description, Caption, Transcript	3-8	Video
Sea Turtles This video segment from Interactive NOVA: "Animal Pathfinders" describes the life history of the sea turtle. Accessibility features: Audio Description, Caption	6-8	Video
The Sense of Taste This video segment explores the sense of taste in humans -- why we have it, and what happens when we lose it. Footage from NOVA: "Mystery of the Senses: Taste." Accessibility features: Audio Description, Caption	3-8	Video
Shape of Things: Trees This video segment from NOVA: "The Shape of Things" describes the pervasiveness of branching systems, which are found in all multicellular organisms. Accessibility features: Audio Description, Caption	6-8	Video
Single-Celled Organisms This video segment explores the astounding diversity of the world's smallest life forms: single-celled organisms. Accessibility features: Audio Description, Caption, Transcript	6-12	Video
Snapshot of U.S. Energy Use This video segment adapted from NOVA/FRONTLINE looks at American energy consumption and the resulting production of greenhouse gases. Accessibility features: Audio Description, Caption	3-12	Video
Sock Seeds In this ZOOMSci experiment, you're invited to walk through a grassy or weedy field in your stocking feet, then plant a sock and see what grows. Accessibility features: Audio Description, Caption, Transcript	K-8	Video
The Teenage Brain Why do teenagers act the way they do? This video segment from FRONTLINE: "Inside the Teenage Brain" explores the work scientists are doing to explain some of the mysteries of teenage behavior. Accessibility features: Audio Description, Caption	6-8	Video
Teri and Jairus: Biome Buddies This video segment from ZOOM compares and contrasts the habitat and life forms found in Death Valley with those found in the temperate rainforest of the Pacific Northwest. Accessibility features: Audio Description, Caption, Transcript	K-8	Video
Toxic Newts The father and son team of Brodie and Brodie track down the predator able to stomach a mysteriously hyper-toxic newt, an example of an evolutionary arms race in action. From Evolution: "Evolutionary Arms Race." Accessibility features: Audio Description, Caption	6-12	Video
Unhinged! This video segment explores the integral relationship between structure and function in snakes. Accessibility features: Audio Description, Caption	6-8	Video