natural resources

Describes how light and heat are given off by the sun, how energy travels, the effect of the sun on our planet, and uses of solar energy.

Explains how geothermal energy, natural heat from inside the earth, can be used as a source of heat or to provide electricity.

Discusses how today's modern wind turbines have developed from the windmills of the past and how technology relating to wind power continues to develop.

Explores the world before the invention of mechanical clocks; looks at the life of John Harrison, creator of the first accurate and portable mainspring clock; and discusses how the world has changed as a result of the invention.

Explains different types of investing-- savings accounts, bonds, stocks, and mutual funds-- and provides information to help make decisions on each kind of investment.

Explains how the invention of the clock changed the world and how the clock now affects all aspects of life today.

Presents a brief history of Wall Street and explains how stocks and bonds are traded in the U.S. securities market.

Explains how a stock is created, how a new company is founded and financed, why investors invest in companies, and how an established company is organized and raises money for its operations.

Discusses the value of gold and how it has been sought after and used in countries around the world throughout history.