Since their inception in 1849, unmanned aerial vehicles have come a long way. The applications, now that the technology has evolved somewhat, are staggering. The most current version of these pilotless aircrafts are the drones that are available for public purchase.
The global population has increased by more than 100% over the last fifty years and is continuing to rise. The current figure is 7.2 billion, a number that scientists estimate would require 1.6 earths to sustain.