The 9 most impressive social good innovations from October

Solving the world's biggest problems requires creativity and perseverance — and innovators around the globe are taking up the challenge. From a device that alerts medical workers when to re-bandage a wound to a wheelchair specifically designed for people in developing nations, these inventions are making a massive difference for those who need it most. SEE ALSO: The 8 most impressive social good innovations from September While certainly not an exhaustive list, here are nine ingenious inno