Need to start a fire but you’re out of matches? Some steel wool and a 9-volt battery will do the trick. Just touch the positive and negative terminals of the battery to the steel wool, and it will start to glow and smolder (the 9-volt battery is sending a current through the thing strands of steel wool). Add some kindling, and you have the start of a fire.ncG1vNJzZmivp6x7p63MoqOyoJGjsbq5wKdlnKedZLmqv9NomauhnKG2orrTZqysnaNis7C%2BjKyrnp2cYsSwu8to