The first drones were hot-air balloons used in the 1800s Later, drone airplanes took over the skies. Today, drones are used by the military, delivery companies, and even drone racers This high-interest text explores each of these uses, as well as the history and future possibilities of drones. A diagram, timeline, graph, and pro/con comparison offer even more information about how drones work, what they're used for, and how they may change in the future.
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.