21 incredible innovations that improved the world in 2016

For proof, look no further than the year's most impactful innovations, offering solutions to some of the world's most pressing problems. From a futuristic bus that glides over traffic to a $1 cup saving countless babies' lives, inventors developed ingenious gadgets and ideas that tackle inequality and improve the world for millions of people. In no particular order -- and certainly not an exhaustive list -- these 21 social good innovations had a massive impact this year. The only thing cooler than a drone is an edible drone -- especially one that saves lives. An inexpensive drone prototype, called Pouncer, was designed to help deliver humanitarian aid to remote regions with impassible roads.