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.

Deserts

Not all deserts are the same. This still collage produced for Teachers' Domain features views of different deserts around the world.

Diamond Formation

An expert describes the carbon composition of diamonds, as well as the conditions necessary for diamond formation in this video segment from Nature.

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Diamonds Everywhere

This Nature video offers an introduction to the socio-economic value of diamonds.

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Diatoms Measure Climate Change

In this video segment adapted from NOVA: "Becoming Human," learn what the analysis of fossilized microscopic algae in sediment tells us about rapid changes in climate in Africa's past.

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Dinosaurs

This video segment from IdahoPTV's D4K shows us what paleontologists think dinosaurs looked like, what they ate, and why they might have disappeared. We see paleontologists at work studying dinosaurs fossils.

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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.

Documenting Glacial Change

This collection of comparative glacier images adapted from the National Snow and Ice Data Center shows substantial changes in five Alaskan glacier positions over periods of 60 to 100 years.

Dolly Garza: A Tlingit and Haida Scientist

In this interactive resource adapted from Raven Radio/KCAW, listen to biologist Dr. Dolly Garza as she explores the sea otter population of Sitka, Alaska, from the perspectives of her tribal heritage and her Western education.

Drilling to Antarctica’s Rock Core

In this video adapted from ANDRILL, find out how geoscientists get through more than a dozen football fields of ice and water in order to study the rock and sediment beneath Antarctica.

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Dustin Madden: Science Teacher

In this video profile produced for Teachers' Domain, meet teacher Dustin Madden, an Iñupiaq who hopes to inspire students to take an active role in protecting the natural environment by giving them a foundation in math and science.

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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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Earthquake! When Plates Collide

This video excerpt from NOVA explains the concept of plate tectonics and how it causes earthquakes.

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Earthquake Prediction

This video segment adapted from NOVA tells the tragic story of two Japanese seismologists who disagreed about the threat of earthquakes in the early twentieth century. Today, seismologists in California offer residents a probability of risk that an earthquake might occur.

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Earthquakes

Students explore the causes of earthquakes, including the role of tectonic plates, and consider the efforts scientists are making to better understand and predict these sometimes deadly events.

Earthquakes

This video segment from IdahoPTV's D4K describes what causes earthquakes, how scientists measure them, where they occur and how to be prepared for one.

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Earthquakes: Breaking New Ground

In this video from QUEST produced by KQED, find out how San Francisco Bay Area scientists are working to help predict when the next big one will hit.

Earthquakes: Los Angeles

In this video segment adapted from NOVA, animations are used to show how the hills around Los Angeles were formed by earthquakes at small thrust faults that extend outward from the larger San Andreas fault.

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Earthquakes: San Francisco

The history of earthquakes in the San Francisco Bay area is plotted on a digital map and analyzed in this video segment adapted from NOVA.

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Earthquakes: The Prehistoric Record

In this video segment adapted from NOVA, a geologist digs a trench along the San Andreas Fault to reveal three thousand years of earthquake history. Information from the layers of sediment may help geologists to predict earthquakes.

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