For decades, it was thought that only two types of superconductors existed, but a new study has just uncovered a third.

Wires don’t usually like being the bearers of electric current. While we find them extremely useful to light our houses, charge our phones, and heat water for our tea, they routinely manifest their opposition to the flow of electricity by heating up. Because of this effect, called electrical resistance, the energy dissipated as heat is wasted, and the amount of electric current that a wire can carry before it melts is limited.