Besides the 22 projects, which utilize everything from swamp gas to solar power, there's also a list of resources for you and/or your kids to follow up so that the learning can continue.
This is the kind of book that should be in every home, and in every late elementary and middle school classroom library. Here's your chance to get a copy: email teachforever@gmail.com with the subject "Catch The Wind Giveaway" by 11:59pm PST Tuesday. One random entrant will win. Good luck!
Catch the Wind, Harness the Sun: 22 Super-Charged Projects for Kids [Amazon.com]