Drones that pass packages to each other could be the future of home delivery

If Amazon has its way, the skies could soon be buzzing with drones, carrying our online purchases directly to our doors.  But today's drones can only travel so far — so what happens when you live out of range of a distribution hub? On Wednesday, IBM Research announced a patent that might someday allow delivery drones to pass off packages to one another mid-flight to create a relay system, extending a supply chain's reach even farther.    SEE ALSO: 9 incredible ways we're using drones for so...