"This title examines the history and use of hydropower, the pros and cons of the technology, and next steps for this important energy source"--

"This title examines the history and use of nuclear energy, the pros and cons of the technology, and next steps for this important energy source"--

"This title examines the history and use of solar energy, the pros and cons of the technology, and next steps for this important energy source"--

Can you name a free, clean, and renewable energy source? The answer is blowing in the wind. Discover how the historic windmill has become today's wind turbine and learn about the prospects for wind power in the future.

"This title examines the history and use of wind energy, the pros and cons of the technology, and next steps for this important energy source"--