Yonsei University

Scientists have created a portable water purifier that works simply by shaking it for three seconds and setting it to float in water. It could be a breakthrough device for emergency situations, and it’s estimated to cost less than $25 to produce.

A materials science and engineering team from Korea's Yonsei University has developed a 3D printing technique enabling OLED screens to be printed into transparent structures of any shape, meaning nearly anything can become a see-through color display.