In a recent Hunger Games movie, there's a scene where a certain scientist says that he invented a wire which will not melt under the current of a lightning. Is that even possible?
Sure, many tall buildings are hit by lightning several times per year. It would be quite expensive to replace the cables each time. It has to withstand currents in the range between 10kA and 100kA for a few milliseconds. A copper wire with a diameter of several centimeters will survive lightning easily.
A thin wire on the other hand is usually vaporized as the Joule heating and low heat capacity combined is too much for the material, even though the current is flowing only for milliseconds. A superconductor will not help significantly here as it still has a non-zero resistance for AC, that is changing, currents.