Energy
Forms and Conversion for Use

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Electricity - Ultimate Energy Converter
Episode 4 of The Science of Energy
Discover what makes electricity such an attractive vehicle for energy. Learn how electricity can come from oil, coal, solar, and other forces, and how electricity travels through wires with the help of voltage. Also, examine recent advances that make it easier for us to choose where we source our electricity.
Fossil Fuel Energy - Issues and Concerns
Episode 9 of The Science of Energy
Fossil fuels, while abundant and portable, come with a significant list of drawbacks. Focus now on the various financial, environmental, and health concerns surrounding our continued reliance on fossil fuels (such as coal fires and oil spills). Then, examine some recent technological and legislative efforts to combat these problems.
Sunlight - Inexhaustible Energy Source
Episode 13 of The Science of Energy
Sunlight is a literally inexhaustible source of energy. Discover why (and how) the sun gives off light, how much sunlight energy the earth's surface gets in an average day, how much land we'd need to supply all our energy needs through sunlight, and some of the geographical problems with solar…
Geothermal Energy
Episode 18 of The Science of Energy
Go deep underground for a look at geothermal energy. Topics include the energy budget of our planet, two main ways of using geothermal energy, five different technologies used for hydrothermal power systems (including dry steam power plants), and the concept of shallow ground source heat pumps (GSHPs).
Probable and Possible Future Energy Sources
Episode 23 of The Science of Energy
Look ahead to the possible (and probable) advancements in the areas of energy resources. You'll cover the growth of tidal and wave energy, the difficulty of nuclear fusion, the energy potential of earthquakes and supervolcanoes, and giant space arrays of solar panels designed to capture even more solar energy.
Petroleum - Chemistry, Retrieval, and Use
Episode 7 of The Science of Energy
In the first of two lectures on petroleum, examine the science behind this common fossil fuel: how it's formed, how it's found and processed, how it's transported, and how it's used. You'll also gain insights into related topics, including geologic structures such as anticlines and the growth of the petroleum…
The Science of Energy - Resources and Power Explained
Energy is, without a doubt, the very foundation of the universe. It's the engine that powers life and fuels the evolution of human civilization. Yet for all its importance, what energy really is and how it works remains a mystery to most non-scientists. For example:
  • Where does most of…
Energy and Human Civilization
Episode 1 of The Science of Energy
How much energy is required to power human civilization? What is it that makes our cities, factories, homes, and cars so energy inefficient? How can the average individual affect energy directions? Find out in this overview of how energy touches everything from engineering and economics to biology, chemistry, and geophysics.
Heat - The Transfer and Flow of Energy
Episode 3 of The Science of Energy
One of the first forms of energy that humans learned to use is heat. You'll examine three ways heat flows (radiation, convection, conduction); make sense of the heat flow equation and the concept of entropy; and go inside the inner workings of a "heat engine" machine.
Chemical Energy, Biomass, and Photosynthesis
Episode 5 of The Science of Energy
Turn now to chemical energy, the potential energy resulting from the position of atoms within molecules. After an overview of photosynthesis (perhaps the universe's most amazing form of energy conversion), learn how combustion transforms biofuels into light and heat, and how energy density affects the transportation of biofuels like petroleum.
Coal: Convenient, Energy-Dense Fuel
Episode 6 of The Science of Energy
Understand one of energy's most polarizing topics: coal. Where does coal come from, and how does it develop? What makes coal "clean" or "dirty"? Why do certain nations have the largest coal reserves? What are some advantages to coal energy? And how does strip mining impact the environment?
Energy Storage Technologies
Episode 19 of The Science of Energy
The sun doesn't always shine, and the wind doesn't always blow. So how do we store renewable energy from these and other sources for later? Focus on several basic (as well as high-performance and high-volume) technologies for storing the surplus of energy we can get from sources such as wind…