Energy

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The Science of Energy (Resources and Power Explained

By: The Great Courses

Narrated By: Michael E. Wysession

Professor Wysession offers an overview of the world’s energy crises with a detailed history of “The Science of Energy”. It is a daunting series of lectures about the chemical nature and origin of energy with its evolving role in world economies. From a chemical perspective, energy is the capacity to do work or produce change. Wysession identifies the many forms of energy ranging from coal to oil to thermal to biological sources of fossil fuels. He reinforces the belief that global warming is largely the result of growth in carbon dioxide in the atmosphere exacerbated by the continued use of fossil fuels.

Wysession explains energy can be stored, transferred, and transformed by chemical reactions and processes. It is the bonding and breaking of atoms in molecules that create energy. He explains there are exothermic and endothermic reactions with combustion that create energy to move machinery and photosynthesis for plant growth.

His optimism is based on a clear-eyed and educated understanding of how carbon dioxide increasingly damages the environment while fossil fuel use continues to pollute the air we breathe.

Wysession explains carbon dioxide is a greenhouse gas that traps heat in the Earth’s atmosphere.

That trapped heat is melting the ice caps, raising sea levels, and causing severe weather events like hurricanes, floods, and ironically, droughts. Higher carbon dioxide levels exacerbate respiratory and cardiovascular disease because of increased particulate matter in the air that causes heart attacks and strokes. Rising carbon dioxide levels increase ocean acidification that reduce biodiversity and threaten coral reefs and shellfish. Extreme weather events destroy farm crops and affect the food and water security of millions of people. Wysession notes the world economy suffers because of damaged infrastructure, increased health care costs, and loss of productivity from fossil fuel accidents and health consequences.

The direct impacts of fossil fuel use and extraction are well known. Fossil fuels create air and water pollution that causes habitat destruction, and ocean acidification. Wysession notes both extraction and use of fossil fuels causes environmental damage from pollution’ accidents and methods of extraction from the earth.

Wysession notes advances in renewable energy technology with solar, wind, and battery storage. He comments on the international cooperation in reducing greenhouse gas emissions and public awareness of the consequence of failure to address fossil fuel pollution. There are also economic benefits from the jobs created with solar, wind, and carbon capture manufacture. (One hopes but doubts our new President understands and acts on those job creation opportunities.)

He revies the history of nuclear fission and fusion. As is widely known, our sun provides energy to the world with fusion that feeds photosynthesis which fuels plant growth by converting carbon dioxide and water into glucose and oxygen, both of which are critical needs for life on earth.

Fusion is a process where two nuclei combine to form a heavier nucleus which releases energy. The energy comes from the kinetic interaction of the nuclei. Though science has not successfully achieved the high temperatures of a sun-like process to make fusion a viable source of energy on earth, it has been done on a small scale. It has not achieved a sustained and economically viable form of energy but its potential as a clean energy source is limitless. In the meantime, fission has worked to destroy people and things while showing it can be harnessed to provide energy to the world. As of May 2024, there are 440 nuclear reactors in operation, with the U.S. having the most at 94.

Wysession acknowledges rising population demands more and more energy but he argues the average energy use of people in the United States has fallen to 10 KW per person and believes it will continue to drop in the future.

Wysession’s drop in energy use per person (whatever that means) may be correct, but the reality is that American population increases show energy use has risen in the 21st century to 94 quadrillion Btu. (Whatever a quadrillion Btu means.)

In the late 20th century, our consumption was 75-80 quadrillion Btus annually. American consumption has risen by 14 quadrillion Btu, i.e., a 17.5 percent increase in 23 years. Though the numbers are incomprehensible, energy consumption in America is rising, not falling.

He notes there are over 70 percent more people on earth than when he was born. The rising cost of gasoline will compel more transition to electric automobiles. He believes coal and gasoline use will continue to decrease for both environmental reasons and consumer costs. Wysession explains coal and gasoline production costs will continue to rise making them too costly for most consumers. He believes energy production of wind, solar, hydro, and nuclear power will become more viable and less costly as science advances. From his lectures to our ears, listeners hope he is right.