Aging Diamonds?

In this video from Nature, geological detectives use ancient diamonds to learn more about Earth's inner layers.

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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.

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Climate Change Impacts Alaska Glaciers

This video adapted from KTOO takes a look at Earth's warming and cooling cycles and the current atypical trend of warming that is impacting the glaciers in Alaska's Inside Passage.

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Clues from Past Climates

In this interactive produced by ThinkTV, learn how scientists discover clues to past climates that lie hidden in the natural environment, as well as in some surprising historical documents.

Comets Bombard the Early Earth

Visualize how comets carrying chemicals necessary for life could have made their way to Earth billions of years ago in this video segment adapted from NOVA.

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Comets Deliver Amino Acids to Earth

Amino acids, essential ingredients for life, may have been delivered to Earth by comets billions of years ago, as visualized in this video segment adapted from NOVA.

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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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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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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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The Falls of the Ohio

This video from KET examines one of the largest exposed fossil beds in the world, found at the Falls of the Ohio River, near Louisville, Kentucky.

Field Research on Glacial Change

In this video segment produced by ThinkTV, learn how scientists take measurements in the field to gain an overall understanding of changes in local water supplies, and how they may relate to changes in the mass of nearby glaciers.

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Fossilized Dinosaur Bones

This still collage produced for Teachers' Domain features a variety of images of fossilized dinosaur bones, which provide evidence for the existence of these fascinating reptiles.

Fossils

Fossils are indicators of past life. This collection of still images produced for Teachers' Domain features examples of fossils from plants, animals, and insects.

Geology of Death Valley

This video segment from NatureScene examines the landforms of Death Valley and how they came to be.

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Geology of North Dakota Badlands

See how the geology of the North Dakota badlands has changed over time in this video segment from NatureScene, featuring the landscape at Theodore Roosevelt National Park.

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The Grand Canyon: Ancient Mountains

This video segment adapted from NOVA features the twisted and melted forms of the Grand Canyon's oldest rocks, the 1.7-billion-year-old Vishnu Schist.

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The Grand Canyon: How It Formed

This video segment adapted from NOVA uses animation to present the theory of how the Grand Canyon was formed and features rare footage of a phenomenon known as debris flow.

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The Grand Canyon: Its Youngest Rocks

This video segment adapted from NOVA features the youngest rock formations in the Grand Canyon, lava dams, and how they are subject to the eroding power of water.

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The Grand Canyon: The Top Two Rock Layers

This brief video segment adapted from NOVA uses illustrations and the well-preserved footprints of a small reptile to portray the history of the Grand Canyon's top two rock layers.

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High Altitude Glaciers in the Tropics

While it may seem like a contradiction, glaciers do exist in the tropical latitudes. In this video produced by ThinkTV, learn about tropical glaciers and why scientists are studying them to better understand global climate change.

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