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Energy supply is foundational to modern society, but damaging to the environment. This book takes a 'systems view', from extraction of primary fuel, through conversion to usable energy, and transportation to point of use. It explores initiatives to generate electricity in an environmentally benign manner, and decarbonise the supply of energy.
Various combinations of commercially available technologies could greatly reduce fuel consumption in passenger cars, sport-utility vehicles, minivans, and other light-duty vehicles without compromising vehicle performance or safety. Assessment of Technologies for Improving Light Duty Vehicle Fuel Economy estimates the potential fuel savings and costs to consumers of available technology combinations for three types of engines: spark-ignition gasoline, compression-ignition diesel, and hybrid. According to its estimates, adopting the full combination of improved technologies in medium and large cars and pickup trucks with spark-ignition engines could reduce fuel consumption by 29 percent at an additional cost of $2,200 to the consumer. Replacing spark-ignition engines with diesel engines and components would yield fuel savings of about 37 percent at an added cost of approximately $5,900 per vehicle, and replacing spark-ignition engines with hybrid engines and components would reduce fuel consumption by 43 percent at an increase of $6,000 per vehicle. The book focuses on fuel consumption-the amount of fuel consumed in a given driving distance-because energy savings are directly related to the amount of fuel used. In contrast, fuel economy measures how far a vehicle will travel with a gallon of fuel. Because fuel consumption data indicate money saved on fuel purchases and reductions in carbon dioxide emissions, the book finds that vehicle stickers should provide consumers with fuel consumption data in addition to fuel economy information.
This paper investigates the response of consumer price inflation to changes in domestic fuel prices, looking at the different categories of the overall consumer price index (CPI). We then combine household survey data with the CPI components to construct a CPI index for the poorest and richest income quintiles with the view to assess the distributional impact of the pass-through. To undertake this analysis, the paper provides an update to the Global Monthly Retail Fuel Price Database, expanding the product coverage to premium and regular fuels, the time dimension to December 2020, and the sample to 190 countries. Three key findings stand out. First, the response of inflation to gasoline price shocks is smaller, but more persistent and broad-based in developing economies than in advanced economies. Second, we show that past studies using crude oil prices instead of retail fuel prices to estimate the pass-through to inflation significantly underestimate it. Third, while the purchasing power of all households declines as fuel prices increase, the distributional impact is progressive. But the progressivity phases out within 6 months after the shock in advanced economies, whereas it persists beyond a year in developing countries.
The Value of Science Projects Science projects are an especially effective way of teaching students about the world around them. Whether conducted in the classroom or for a science fair, science projects can help develop critical thinking and problem solving skills. In a classroom setting, science projects offer a way for teachers to put “action” into the lessons. The students have fun while they’re learning important knowledge and skills. And the teacher often learns with the students, experiencing excitement with each new discovery. Science projects are generally of two types: non-experimental and experimental. Non-experimental projects usually reflect what the student has read or heard about in an area of science. By creating displays or collections of scientific information or demonstrating certain natural phenomena, the student goes through a process similar to a library research report or a meta-analysis in any other subject. Projects of this type may be appropriate for some students at a very early level, but they usually do not provide the experiences that develop problem-solving skills related to the scientific process. On the other hand, experimental projects pose a question, or hypothesis, which is then answered by doing an experiment or by modeling a phenomenon. The question doesn’t have to be something never before answered by scientist—that is not necessary to conduct original research. The process of picking a topic, designing an experiment, and recording and analyzing data is what’s important.