Collecting Data Below the Earth's Surface

This video segment adapted from Discovering Women demonstrates how scientists use sound waves to collect data about the structure of Earth's crust.

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Counting Neutrons on the Moon

Find out how scientists are using a neutron detector onboard a satellite to try to find water on the Moon in this video adapted from NASA.

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Deforestation in Bolivia

This visualization adapted from NASA features two satellite images from 1984 and 2000 that show the dramatic deforestation of the Bolivian rainforest.

The Disappearing Aral Sea

This visualization adapted from NASA features satellite images showing how more than 60 percent of the Aral Sea has disappeared during the last 30 years.

Earth System: Satellites

This video segment adapted from NASA's Goddard Space Flight Center shows how integral satellites are to everyday life and describes the different types, including orbital and geostationary.

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Geospatial Revolution

Learn how satellite imagery, social networking sites, mapping technologies, and volunteers worked together to address human needs following an earthquake in Haiti, in this video segment from Geospatial Revolution, produced by Penn State Public Broadcasting.

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High-Tech Agriculture

In this video adapted from ATETV, hear how Kirkwood Community College students are learning to apply new technologies like GPS and GIS to the agricultural industry.

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Hurricanes: New Orleans Under Threat

This video segment adapted from NOVA scienceNOW exposes how decades of development and geography combined to make the potential damage from a hurricane uniquely devastating in New Orleans, Louisiana.

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Imaging with Radar

This interactive activity from NOVA features synthetic aperture radar (SAR), which uses radio waves to create high-quality images. Examine SAR images of Washington, D.C., and learn about this technology's unique advantages.

LIDAR 3D Mapping

See how researchers create 3-D maps of planets by using LIDAR (light detection and ranging) instruments in this video adapted from NASA.

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Meet Curiosity, a Mars Rover

Learn about the sophisticated scientific instruments on Curiosity, the latest Mars rover, in this interactive activity adapted from NASA.

The Mississippi River Delta

These images from NASA, the Lunar and Planetary Institute, and U.S. Geological Survey illustrate the effects of severe storms and decades of river management on the size and shape of the Louisiana coastline and the Mississippi River Delta.

Pilotless Flight: Timeline of Unmanned Aerial Vehicles

Explore this NOVA interactive timeline and discover the many technological innovations in the history of unmanned flight, from hot-air balloons to miniature flying robots.

Sound Waves Underwater: The Loch Ness Monster

This video segment, adapted from NOVA follows a team of enthusiasts and scientists who attempt to find a trace of the Loch Ness monster by scouring the lake with sonar.

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Viewing Gamma Rays

Learn how high-energy gamma rays interact with electrons and discover how astronomers create images from high-energy gamma rays, in this interactive activity adapted from NASA.

Viewing Radio Waves

Discover how astronomers create images from radio waves, in this interactive activity adapted from NASA.

Viewing X-Rays

Learn about high-energy light waves and how astronomers visualize X-rays in this interactive activity adapted from NASA.

Visualizing Topography

Explore the topography of a hill, a valley, and a cliff in this interactive activity featuring visualizations of three-dimensional topography in two dimensions. Adapted from Stephen Reynolds' "Visualizing Topography."

Ways of Navigation

This video, adapted from material provided by the ECHO partners, describes three different ways that people have navigated the oceans.

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