A Powerful Chemistry Tool Inspired by Music Boxes Only Costs $5

Stanford University's Manu Prakash, Ph.D., loves coming up with cheap, rugged scientific equipment, like his 50-cent microscope made of folded cardboard. Now he's followed that up with another ingenious chemistry tool: A $5 device that uses the guts from a music box to control chemical reactions with super precision. » 4/08/14 12:40pm 4/08/14 12:40pm