Ever swallowed something by mistake? Science now has the answer in the form of a piece of disgusting-looking magnetic slime that will worm around inside your body. The breakthrough was made by scientists at the Chinese University of Hong Kong, with New Scientist reporting that they mixed “neodymium magnet particles with borax, a common household detergent, and polyvinyl alcohol, a kind of resin” in order to create a controllable slime.
Here it is at work: