Geothermal energy is being used today on a small scale but is an appealing alternative to other sources of energy as it has little impact on the environment. This source of energy and how we are harnessing it are described here.

Solar energy is an appealing alternative to conventional sources of energy because it produces no greenhouse gases. An overview of its advantages and disadvantages is presented here.

The many sources of energy production in the United States are described in this overview. Included are traditional sources, renewable sources, and new energy production technologies.

This very comprehensive site aims to provide the latest, most accurate information available about energy, its consumption, sources of energy, alternative energy, impact on the environment, and conservation. One section focuses on the...

Hydroelectric power has been a major source of energy production in the United States. More recently, other alternative energy sources have taken some of its market share. Hydroelectricity has both advantages and disadvantages, briefly...

Browse and download from this multimedia collection which contains photographs, videos, B-roll, graphics, and animations related to solar technologies, research, and projects.

The status of wind energy production in the United States is described, with the advantages and disadvantages of this alternative energy source.

The pros and cons of harnessing energy from biomass are outlined. Biomass refers to biological materials that are used to produce energy. Wood and manure are examples of biomass.

A comprehensive source of information about energy in all its forms. Each type of energy is explained, along with information about its environmental impact, supported with graphs, charts, and other data. There is a twenty-question quiz...

Natural gas is an abundant resource across the United States, and new discoveries and extraction methods have led to a dramatic rise in shale gas development -- making America the world's leading natural gas producer. We invest in...

An interactive animation teaching how a wind turbine works to produce electricity.

The advantages and disadvantages of hydrogen fuel cell technology as a source for energy production are outlined. There is still much to be done in research and development before this energy source can be marketed widely.

ABC Da Energia describes the many ways that energy can be obtained and conserved. It explains different sources of energy, how each works, and how energy can be saved in our daily lives. Interactive energy-saving activities and games...

WLVT PBS 39 explores how a family in Berks County, Pennsylvania has put much of the renewable energy resources to work on their farm. All of these technologies were showcased at the Renewable Energy Sustainable Living Festival for the...

There are a variety of lesson plans here on solar and wind energy, and on sustainable transportation.

Pembina Institute, a well respected Canadian research organization, has posted a variety of reports on renewable energy and energy efficiency here. Many of them respond to or make recommendations on federal and provincial government...

The official website for Union of Concerned Scientists provides information on environmental issues and suggestions on actions people can take to curb environmental harm.

Biofuels are made from organic materials such as corn and algae, as well as sugars and starches from plant cellulose. They have advantages such as sustainability and lowered greenhouse gas production, but they can impact on the...

Research different types of fuel to see when major developments occured in their use. Fourteen different types of fuels can be researched, including fossil fuels and alternative fuels.

A brief explanation of the advances being made in the design of nuclear power facilities.

Alternative forms of energy site showcases fossil fuels. Discover how it works, its' advantages and disadvantages as well as whether or not it's a renewable resource.

Website outlining the controversial issue of finding alternative energy sources to replace fossil fuels.

This PBS science report on alternative fuels focuses mainly on ethanol. Multimedia features include a video from the NewsHour with Jim Lehrer [11:13], an interactive car comparison, and further reports on ethanol and other biofuels....

Extensive information about the different forms of renewable energy, energy efficiencies that can be achieved, energy research, and the many applications for renewable energy production.