If all the compasses in the world started pointing south rather than north, many people might think something very strange, very unusual, and possibly very dangerous was going on. Doomsayers would ...

The needle will turn and then come to a complete stop. It will be facing magnetic north. You can check this by placing the compass next to the bowl. The needle is being affected by the Earth’s ...

Magnetotactic bacteria synthesize magnetic iron nanominerals, which function as tiny compasses that allow the microbes to navigate using Earth's geomagnetic field. Earth's iron cycle is a very ...