A 20-cent lifesaving tool that’s made with only paper, string, and PVC pipe

The MacArthur “genius” fellow Manu Prakash, known for his “frugal science” inventions like a $1 origami microscope, has done it again. His latest creation is a 20-cent medical device that’s made of only paper, string, and two pieces of PVC pipe. It’s called the paperfuge, and may one day replace expensive centrifuges that can cost $1,000.