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.

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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."

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Animal Hearing

Students explore how sound is created, the importance of hearing in certain environments and some environmental causes of hearing loss.

Arctic Tundra

This video segment from Wild Europe: "Wild Arctic" explores the struggle for survival in one of Earth's most extreme environments.

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Atmospheric Oxygen

In this feature, adapted from Interactive NOVA: "Earth," students explore the relationship between oxygen concentration and the well-being of various organisms by simulating a change in oxygen levels and observing what happens.

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.

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Bee Navigation

This video segment from NOVA: "The Mystery of Animal Pathfinders" explores honeybee communication and navigation.

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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."

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Body Breakdowns

This interactive feature from the NOVA "Surviving Denali" Web site details the variety of ways the body can fail while climbing a high-altitude peak.

Body Needs

This interactive feature from the NOVA "Dying to Be Thin" Web site describes the nutritional needs of the body and how to meet them.

Brain Geography

Which part of your brain controls your ability to swallow? Your instinct to survive? And how do all the brain's parts function cooperatively? Find out with this interactive feature from the NOVA: "Coma" Web site.

Chain Reaction

This inquiry-based Nature lesson plan will challenge students to design and conduct scientifically valid experiments to evaluate hypotheses regarding an animal’s expected behavior in response to changes in its environment.

Dances with Bees

This interactive feature from the NOVA "Tales from the Hive" Web site explores the methods honeybees use to communicate to their hivemates the location, quantity, and quality of nearby food sources.

Desert Biome

This video segment from NOVA: "A Desert Place" describes the physical characteristics and organisms that define the desert biome.

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Destructive Forces

In this video segment from Nature, scientists question how animals mysteriously survive natural disasters.

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Dolphin Reproductive Behavior

This video segment from the Science and Technology Chat series focuses on dolphin pregnancy, birth, and care of the young, and features Atlantic bottlenose dolphins living in captivity at the Mirage Resort Dolphin Habitat.

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Dr. Jay Giedd: The Adolescent Brain

In this transcript from FRONTLINE: "Inside the Teenage Brain," neuroscientist Dr. Jay Giedd discusses new research on brain development in teenagers.

Ear Shape

Students use scientific inquiry to investigate how ear shape affects hearing.

Effects of Environmental Change

Students investigate what might happen to plants and animals if their environment changes.

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.

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