Articles, videos, and photos on the topic of world conservation such as green health, air quality, and climate change.

The importance of energy conservation and energy efficiency are discussed, with reference to where Americans' energy use compares to that of the rest of the world.

[Free Registration/Login Required] Create a science test that checks for student understanding in science, for common misconceptions, as well as for correct ideas. This is a list of key ideas related to Substances, Chemical Reactions,...

[Free Registration/Login Required] Create a science test that checks for student understanding in science, for common misconceptions, as well as for correct ideas. This is a list of key ideas related to Energy: Forms, Transformation,...

Use this calculator to figure out how much water you are using at your home.

Discusses different features that can be incorporated into a home's design in order to harness solar energy.

Explains how a heat pump system works, and how a ground-coupled system improves its efficiency and saves money.

Discusses different ways to heat and cool a home, and perform a variety of tasks, using renewable energy sources. Examples include window shades, a solar water heater, solar-powered toys, etc.

[Free Registration/Login may be required to access all resource tools.] Covers the law of conservation of energy and how energy is conserved in chemical reactions.

[Free Registration/Login may be required to access all resource tools.] Describes the law of conservation of energy and how energy is conserved in chemical reactions.

By taking a look at the energy of motion all around us, students learn about the types of energy and their characteristics. They first learn about the two simplest forms of mechanical energy: kinetic and potential energy, as illustrated...

[Free Registration/Login may be required to access all resource tools.] In this online tutorial students are asked to demonstrate and apply the law of conservation of momentum.

A comprehensive exploration of rivers and lakes, their importance to biodiversity and to humans, how we use them, threats they face, and what is being done to conserve them.

Explains how photovoltaic systems work and how Texas homeowners are using them. Discusses how a homeowner can use solar energy and still be on the electricity grid system.

An introduction to solar cookers, how they are designed, and how to use one.

Explains the types of solar water heaters a home can have. These include a passive system, an active system, and a solar collector, as well as the need for a storage tank. It also gives tips on how to get the best use from a solar water...

Discusses photovoltaic energy systems and their many applications, e.g., in telecommunications, consumer products, space technology, solar lights, etc.

Explains what landfill gas is, some of its applications, and how Texas is harnessing it as a source of renewable energy.

Looks at the basic science behind the production of energy from wind.

Looks at the state of wind energy production in Texas.

Discusses the state of renewable energy production in Texas, which opened the market to competition, set minimum standards for the production of renewable energy, and established a system of Renewable Energy Credits. These factors...

Looks at ways that renewable energy resources and systems have been used in the past, and continue to be developed today, in agriculture and on agricultural land.

A basic guide for ways to be more energy-efficient and to use more renewable energy sources in a building. These include methods of reducing heat or cool air loss, ways of harnessing solar energy, and using the wind for ventilation.

Learn the differences between cars powered by different fuels. Looks at solar, electric, hybrid and gasoline-powered cars.