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.

Fossils: An Ancient Sea in Indiana

In this interactive activity from the Children's Museum of Indianapolis, Indiana, examine a piece of the ancient Borden Sea in what is now central Indiana. Explore the types of fossils found there and the clues they offer to ancient life on Earth.

Fun with Fossils

Students create their own fossils, and then learn how real fossils form, and investigate what they can tell us about the past.

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: Evidence of Earth's Past

In this video segment adapted from NOVA, a fossil found among the Grand Canyon's rock layers reveals the existence of a shallow sea that once covered most of western North America.

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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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How a Dinosaur Became a Fossil

This interactive resource adapted from the Museum of Paleontology at the University of California, Berkeley shows how a dinosaur can be buried under sediment after it dies, become a fossil, and then become exposed and discovered by paleontologists.

How Did Life Emerge Here?

This video segment adapted from NOVA describes the emergence of life on the islands of Hawaiʻi from a barren volcanic platform under the ocean waves to the rich explosion of life that covers the many climate zones of the islands today.

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How The Ohio River Was Formed

This video segment adapted from KET's Where the River Bends demonstrates how climate change and glacier movement during the Ice Ages destroyed the old Teays River and created the Ohio River, Kentucky's northern border.

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Ice-Core Record of Climate

This video excerpt from NOVA: “Extreme Ice” explores how ice cores reveal a relationship between greenhouse gases and climate.

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Inclusion Conclusions

Learn where diamonds originate and how inclusions trapped within diamonds help geologists determine their age in this video segment from Nature.

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Life Before Oxygen

This video segment adapted from Interactive NOVA features evidence of life on Earth before the atmosphere contained a rich supply of oxygen.

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Mammals Get Their Chance

In this video segment adapted from NOVA, animations of an asteroid hitting Earth are used to illustrate this widely accepted theory of dinosaur extinction and the resulting conditions that favored mammals.

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Natural Climate Change in Djibouti, Africa

In this video segment adapted from NOVA, animations are used to illustrate how change in the tilt of Earth's axis produces dramatic climate change over thousands of years.

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