21 incredible innovations that improved the world in 2016

2016 may have been a terrible year in many ways, but there was still some undeniable good to come out of the past 12 months.

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.  Read more...