Each wire runs vertically up through the mud, measuring up to two inches in length. And each one is made up of thousands of cells stacked on top of each other like a tower of coins. The cells build a protein sleeve around themselves that conducts electricity.
This is incredible: the discovery that bacteria can form chains, build a protein sleeve around themselves, and create electrical wires. I’m grateful for the clear-eyed journalists who find and write about such scientific discoveries for us lay-persons.