The development of nations depends on energy consumption, which is generally based on fossil fuels. This dependency produces irreversible and dramatic effects on the environment, e.g. large greenhouse gas emissions, which in turn cause global warming and climate changes, responsible for the rise of the sea level, floods, and other extreme weather…

The January 2013 Physics Challenge for Teachers and Students has some features that are surprising and worth a closer look. The problem concerns a Carnot-cycle refrigeration unit operating inside a tent. It achieves dynamic equilibrium with a freezer ("cold") compartment temperature of T[subscript C] = 13°C, tent temperature of…

This paper is the first part of a three-part project "How the principle of energy conservation evolved between 1842 and 1870: the view of a participant". This paper aims at showing how the new ideas of Mayer and Joule were received, what constituted the new theory in the period under study, and how it was supported experimentally. A…

Aaron Sebens and his fourth grade students received this congratulatory tweet from the White House as a response to the solar-powered classroom that they created in 10 weeks. The process--defining the goals, raising funds, construction, and implementation--involved many subject areas: reading, writing, math, science, and social studies. This…

Power electronics and renewable energy are two important topics for today's power engineering students. In many cases, the two topics are inextricably intertwined. As the renewable energy sector grows, the need for engineers qualified to design such systems grows as well. In order to train such engineers, new courses are needed that highlight the…

In 2009, President Obama proposed an initiative to decrease our country's energy consumption and dependence on fossil fuels. One key to this plan was to decrease the amount of energy used to heat and cool our homes through government incentives. The EPA estimates that the average American household spends over $1000 annually for heating and…

Cars are the focus of this feature article, which explores such topics as the history of cars in the United States, the national highway system, safety and pollution concerns, mobility and freedom for women, classic car shows, and the road trip in American literature and film. Also included are links to the websites of Automobile in American Life…

Al Bartlett's video "Arithmetic, Population, and Energy" spells out many of the complex issues related to energy use in our society. Bartlett makes the point that basic arithmetic is the fundamental obstacle preventing us from being able to grasp the relationships between energy consumption, population, and lifestyles. In an earlier…

The energy concept is one of the most important ideas for students to understand. Looking at phenomena through the lens of energy provides powerful tools to model, analyse and predict phenomena in the scientific disciplines. The cross-disciplinary nature of the energy concept enables students to look at phenomena from different angles, helping…

A Green school is energy efficient, higher performing school that can be environmentally beneficial. Importance of Green school lies in the environmental friendliness value it upholds. Service learning has emanated out of philosophies of progressiveness and pragmatism. Service learning enables students to grow and learn through active…

Today, being sustainable means living smart. But to live smart, we need to change our behavior. This article shows how schools and school districts offer great opportunities for teaching students and staff how to live smart, therefore sustainably, all while generating savings that can be used for other, more strategic investments within the school…

The University of Alabama at Birmingham (UAB) has experienced rapid growth in the last decade. In addition to educating over 17,000 students annually, UAB is a major research facility and academic healthcare center. Due to growth and expansion, UAB requires more and more water to sustain operations. The central chilled water system serves over…

Emperor penguins, the largest of all the penguin species, attain heights of nearly four feet and weigh up to 99 pounds. Many students are not motivated to learn mathematics when textbook examples contain largely nonexistent contexts or when the math is not used to solve significant problems found in real life. This article's project explores how…

Climate change is one of the most significant challenges today. Throughout the world, countries are taking bold steps to create a healthier and sustainable planet. Colleges have developed and implemented broad and significant measures to reduce carbon emissions and combat climate change, in everything from the development of new programs in…

Every day, the sun showers the Earth with millions of times more energy than its people use. The only problem is that energy is spread out over the entire Earth's surface and must be harvested. Engineers are learning to capture and use some of this energy to make electricity for homes. Solar panels make up the heart of a solar system. They can be…