In order to function, the cells in our bodies need to coordinate and pass information, say, if we need a burst of energy to flee a threat. But, without eyes, ears, or even radios, how do they signal this information reliably? “The only way to communicate, and this is actually a big challenge for biology, is by basically sending out groups of molecules which then can interact with other molecules," said Professor Mike Hinczewski, a biophysicist at Case Western Reserve University . "There’s going