Alaska Tsunami

In this video adapted from Alaska Sea Grant, discover why multiple tsunamis resulted from the Great Alaska Earthquake of 1964.

Anatomy of a Tsunami

Using visual models and other graphics, this interactive activity from NOVA Online reveals details of the December 26, 2004 tsunami that collided with coasts around the Indian Ocean.

Antarctic Ice Movement: Part II

Within Antarctic ice sheets are fast-moving streams of ice. This video segment adapted from NOVA hypothesizes about how ice streams are the result of warming at the end of the last ice age.

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Bear Creek Wind Farm Tour

In this interactive, a construction project manager explains the process of constructing a wind farm, its challenges and benefits.

Changes in the Ozone Layer

This video segment produced by ThinkTV demonstrates how ozone is created in the upper atmosphere, explains its beneficial role, and explores the problem of ozone depletion.

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Compare and Contrast Warm and Cold Fronts

This visualization from McDougal Littell/TERC visualizes the movement of warm and cold fronts and the cloud types that are generated as a result.

Convective Cloud Systems

This video segment adapted from the Atmospheric Radiation Program explains the differences in the formation of tropical convective cloud systems over islands and over the ocean.

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Earth as a System

This visualization adapted from NASA maps progressive global changes onto a rotating globe. Earth's atmosphere, hydrosphere, geosphere, and biosphere are shown to be dynamic and interconnected.

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Earth System: Ice and Global Warming

This video segment adapted from NASA's Goddard Space Flight Center explains ice's role in the Earth system, highlighting the delicate balance that could be upset with a continued rise in temperature due to climate change.

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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.

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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.

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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.

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Examine Global Surface Currents

This visualization from McDougal Littell/TERC visualizes the relationship between global wind directions and the direction of ocean surface currents.

Global Warming: Carbon Dioxide and the Greenhouse Effect

This video segment adapted from NOVA/FRONTLINE demonstrates the physical property of carbon dioxide that causes the greenhouse effect.

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Global Warming: The Physics of the Greenhouse Effect

This video segment adapted from NOVA/FRONTLINE examines the greenhouse effect, its role in keeping Earth habitable, and the industrial changes that have led to an increase in the planet's average temperature.

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Great Ocean Conveyor Belt: Part II

A substantial increase in freshwater running into the northern Atlantic Ocean could dramatically affect climate and global ocean currents. This audio segment from National Public Radio presents viewpoints from scientists studying changes in ocean circulation.

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Green Energy

This video segment from IdahoPTV's D4K describes renewable and non-renewable energy sources and the benefits and drawbacks of each. It provides some ideas about how you can personally conserve energy.

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How Hurricanes Form

This animation from NASA illustrates the phases in the formation of a hurricane.

Hurricane Katrina: Possible Causes

This media-rich essay from NOVA scienceNow explores new research into hurricanes that may help explain Katrina's devastating impact and discusses the possibility that global warming played a role.

Infrared Energy

Explore infrared energy and how NASA detects it to study our Earth's systems more completely in this video adapted from NASA.