Look at the text below. In 40 seconds, You must read this text aloud as naturally and clearly as possible. You have 40 seconds to read aloud
Current Status:
Beginning in 40 seconds
Answer
Each tube-shaped microbot is a sandwich of three materials. A graphene outer layer, which binds to heavy metals. A middle layer of nickel, which gives the bots magnetic polarity, so they can be pulled through wastewater with magnets. And platinum inside - for propulsion. Just add a bit of peroxide to the wastewater, and it'll react with the platinum to form water and oxygen bubbles, which propel the tubes along.
