Clifton Suspension Bridge

This video segment from Building Big illustrates the basic design principles of the Clifton Suspension Bridge in Bristol, England.

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Climate Watch: Unlocking the Grid

Today we rely on electricity more than ever. In this video from QUEST produced by KQED, explore the challenges of harnessing renewable energy.

Closed-Loop Systems

This interactive activity adapted from the Wisconsin Online Resource Center explores the processes, controls, and components that make up a typical closed-loop system used in automated manufacturing.

Coal in America: What is the Strategy

From FRONTLINE Heat, this video investigates the capabilities of America's coal industry to adapt to the call for a reduction in carbon emissions.

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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Colliding Neutron Stars Create Black Hole and Gamma-ray Burst

This video from NASA describes the detailed computer modeling used to predict that colliding neutron stars can produce gamma-ray bursts similar to those associated with black holes.

Columns: Experimenting with Paper Cups

In this video segment from ZOOM, the cast experiments to see if a bunch of paper cups covered by a piece of cardboard can support the weight of a cast member.

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Columns: Hillary's Neighborhood

In this video segment from ZOOM, Hillary, from Randolph, MA, takes us on a tour of the columns in her neighborhood.

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Composite Materials for Space

Discover why engineers use composite materials to build spacecraft prototypes in this video segment adapted from NASA 360.

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Computer Game and Simulation Technology

Find out more about the cutting-edge field of simulation and computer game development in this video adapted from ATETV.

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Computer Networks

This interactive activity adapted from the Wisconsin Online Resource Center describes types of computer networks and how they function.

Construct an Aqueduct

Think like an engineer and build an aqueduct in this interactive activity from the NOVA Web site.

Converting to Biodiesel

Meet a college student whose class project to turn cooking grease into diesel fuel resulted in converting bus fleets to biodiesel, in this video from Earth Island Institute's New Leaders Initiative.

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Cooking Cookies with Solar Power

In this video segment adapted from ZOOM, two solar cookers are tested against a control to see which can cook a "s'more" faster.

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Corporations or Consumers: Who's Responsible for Climate Change?

From FRONTLINE Heat, this video challenges viewers to examine who is really responsible for climate change: corporations or consumers?

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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Create a DNA Fingerprint

Learn DNA profiling, the technique police use to catch the guilty and free the innocent. From NOVA: "The Killer's Trail" Web site.

Critical Thinking and Problem Solving in Advanced Manufacturing

In this media-rich lesson plan, students learn how critical thinking and problem solving are used in advanced manufacturing fields, then apply what they’ve learned in activities that are based on real-world scenarios.

The Cumberland Gap Tunnel

This KET video chronicles the incredible engineering effort that built the tunnel through Cumberland Mountain as well as the challenges posed by the geological composition of the area.

The Dam Challenge

In this interactive activity from the Building Big Web site, investigate dams in distress and decide if they should be repaired, removed, or left alone.

Deadly Letters: The Anthrax Mystery

In this media rich lesson plan from NOVA scienceNOW, student teams investigate a fictional anthrax case by modeling DNA sequencing and tracking down the guilty lab.

Demolition Woman

Find out how controlled explosions are used to demolish multi-story buildings in this interview from the NOVA Web site.

The Deployable Energy Absorber

Watch how engineers stage a crash to test a new helicopter safety design technology in this video from NASA.

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Design and Construct a Road Sign Support

Students use simple materials to design, build, and test a model of a free-standing structure used to support overhead road signs.

Design an Ion Engine

Learn about ions and then design an ion engine to maximize thrust in this interactive activity adapted from NASA.

Design: Building a House

This collection of images follows the process of building a house from cutting the trees and making the bricks to finishing construction.

Designing a Paper Bridge

In this video segment adapted from ZOOM, cast members make a bridge from a single piece of paper. Will it be strong enough to hold a hundred pennies?

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Designing Balloon Cars

Can the air in a balloon power a car? Watch students from Weston, Massachusetts, demonstrate their balloon car designs in this video adapted from ZOOM.

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Designing Future Cities: Alternative Energy

In this video segment adapted from ZOOM, visit a class as they design a city of the future that will use solar, wind, and water power to fuel its economy.

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Designing the Citigroup Skyscraper

This video segment adapted from Thinking Big, Building Small shows how a structural engineer overcame the challenge of building New York's Citigroup skyscraper over a church.

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Design: The Right Tool for the Job

Which tool is the right tool for the job? This collection of images features a series of cutting tools performing the tasks for which they were designed.

A Different Kind of Fuel

In this segment from Curious, learn about creating energy from solar rays to meet the growing energy needs of the world.

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The Digital You: Attention, Multitasking and Addiction

From FRONTLINE Digital Nation, this video shows the contrast between students' and teachers' views on laptops in the classroom.

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DNA Extraction

This interactive activity adapted from the University of Nebraska's Plant and Soil Sciences eLibrary illustrates how DNA, which is normally locked inside of cells, is extracted from living tissue.

DNA Libraries

This interactive resource adapted from the Dolan DNA Learning Center explores the different types of DNA libraries used to store and access genetic information.

DNA on the Witness Stand

In this article, Dr. Eric Lander of the Human Genome Project comments on the use of DNA as an identification tool -- the theoretical versus the practical results.

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DNA Sequencing

This interactive activity adapted from the Dolan DNA Learning Center looks at two techniques used to sequence DNA: the Sanger method and an automated process based on the Sanger method.

The Dome Challenge

In this interactive activity from the Building Big Web site, think like an engineer and use your knowledge of dome design to match the right type of dome to the right location in a fictitious city.

Eduardo Torres-Jara

In this video from Science City, meet Eduardo Torres-Jara, a postdoctoral associate in electrical engineering and computer science at the MIT Artificial Intelligence Lab. He describes his work on innovative robots that use tactile feedback to locate and grasp objects.

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Dust-Proofing a Mars Rover

Enter the lab of NASA scientist Dr. Carlos Calle to see how systems are being developed to keep planetary rover solar panels dust-free, in this video from NASA EDGE.

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Electrophoresis and Gel Analysis

In this animation produced by WGBH and Digizyme, Inc., see how molecules of DNA are separated using gel electrophoresis, and how this process enables scientists to compare the molecular variations of two or more DNA samples.

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Elements of Steel

This resource from the AMERICAN EXPERIENCE Web site, which contains both an interactive activity and illustrated text, looks at the composition of different types of steel and their impact on technology.

Eluting Red Fluorescent Protein From the Column

This video produced by WGBH demonstrates how to properly elute a red fluorescent protein after it has been bound in a chromatography column.

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Energy Audit Technology

Watch students as they conduct an energy audit on a home and gain hands-on experience for a career in the green energy industry, in this video adapted from ATETV.

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Energy Production

Students examine the role of energy in our daily lives and how we produce energy to power our cities, homes, and schools. The advantages and disadvantages of each energy source are also addressed.

Energy Sources

Although California uses more renewable resources than many other states, much of the state's electricity still comes from nonrenewable sources. Find out how using renewable energy sources to create electricity helps reduce fossil fuel consumption and how it has the potential to have the largest impact on climate change.

Energy Sources

This video segment illustrates a variety of energy sources used to generate electricity, some of which are in use and some of which are under exploration.

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Engineer a Crop: Transgenic Manipulation

You're the geneticist now. In this interactive feature from the NOVA/FRONTLINE "Harvest of Fear" Web site, use the latest in genetic technology to engineer your own "supercrop" of tomatoes.

Engineering Biofuels

In this video segment adapted from KQED's QUEST, find out how synthetic biologists use the techniques of metabolic engineering and directed evolution to make more effective biofuels.

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Engineering Career Options

It's a profession that can take you from the depths of the ocean to the far reaches of outer space, from within the microscopic structures of the human cell to the top of the tallest skyscrapers. In this stills collage adapted from The American Society for Engineering Education, learn about some of the most popular engineering fields.