There are a lot of good reasons to be suspicious of regulators who claim to be guardians of the truth, but every now and then they get something right. The United Kingdom’s Advertising Standards Authority (ASA, http://www.asa.org.uk) is that country’s equivalent of the Federal Trade Commission, with jurisdiction over false advertising. Last month, the ASA reached a settlement with the British Wind Energy Association acting as agent for the country’s wind generators. Two months earlier, a local anti-wind group filed a complaint at the ASA against Npower, a subsidiary of Germany’s RWE. Npower’s advertising claimed that every kilowatt-hour of wind power displaced 860 grams of CO2 emissions from fossil-fuel power plants. The ASA determined that the amount was badly overstated. …

Editor’s Note: Master Resource’s founder and editor, Rob Bradley, is currently struggling with the aftermath of torrential flooding in the Texas Hill Country. Until he can return to work, he has asked me to post “classic” MR entries. This 2008 essay by Bradley about Malthusianism, resourceship, and the ultimate resource surely qualifies. — Roger Donway, Managing Editor.

In 1972, just two years after the first Earth Day, a team of scholars from MIT published a 200-page book called The Limits to Growth. Using the emerging instrument of computer models, they created a worldwide stir by suggesting that science had now put numbers to a few self-evident truths. Non-renewable resources are fixed; the consumption of such resources must eventually end; any civilization based on such consumption must collapse. New York Times columnist Anthony Lewis called the work “likely to be one of the most important documents of our age” (January 28, 1972).…

Editor’s Note: Master Resource’s founder and editor, Rob Bradley, is currently struggling with the aftermath of torrential flooding in the Texas Hill Country. Until he can return to work, he has asked me to post “classic” MR entries. A blog post explaining Vaclav Smil’s concept of “power density” surely qualifies. This is the key concept for understanding a civilization’s energy needs.

Unfortunately, our MR files contain no concise explanation of the concept in layman’s language. (We have many explanations that no conceivable lay reader—myself most definitely included—could possibly understand or appreciate.) The closest thing I could find to a useful journalistic entry was a blog post by Kent Hawkins—a retired electrical engineer in Ontario—published on February 20, 2013. It is reprinted below.—Roger Donway, Managing Editor.

Power Density Separates the Wheat from the Chaff

By Kent Hawkins — February 20, 2013

“Power density (W/m²) is perhaps the most revealing variable in energetics…”[1]- Vaclav Smil

It may be a bit of an exaggeration to say that understanding power density may be all the average person requires to put our energy sources and needs into perspective, but there is some merit in this argument.…

Editor’s Note: Master Resource’s founder and editor, Rob Bradley, is currently struggling with the aftermath of torrential flooding in the Texas Hill Country. Until he can return to work, he has asked me to post “classic” MR entries. The following surely qualifies. It is a review of the book that he and Richard Fulmer published in 2004, and that gave its name to this blog.—Roger Donway, Managing Editor.

This book review was published just short of 20 years ago in The Quarterly Journal of Austrian Economics [Vol. 8, No. 3 (FALL 2005): 93–95] by Pierre Desrochers of the University of Toronto.

“Austrian economists have so far contributed very little to energy studies…. This book could therefore go a long way in providing a new set of concrete economic examples and principles for use in classroom discussions.”