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... This description may be from another edition of this product.
ThriftBooks sells millions of used books at the lowest
everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We
deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15.
ThriftBooks.com. Read more. Spend less.