Harness It: Invent New Ways to Harness Energy and Nature (Invent It)

You can control the power of energy with your own two hands. In Harness It, you'll invent a penny battery, a solar cooker, a trip wire, and many other energy harnessing contraptions. When it comes to inventing, your imagination has no limits! "Explains the principles of inventing and provides photo-illustrated instructions for making a variety of projects that harness energy"--Provided by publisher.