In the blink of an eye in geological time, Canada has lost one north pole but gained another, a new and different claim to be ...

If shrunken down to micron size, a compass needle could wobble. (Courtesy: iStockphoto/tobias machhaus) A tiny magnetic needle just 10 μm long could be used to create a magnetic-field sensor that – if ...

A magnetometer is a device that measures magnetism: the direction, strength, or relative change of a magnetic field at a ...

When Santa is done delivering presents on Christmas Eve, he must get back home to the North Pole, even if it's snowing so hard that the reindeer can't see the way.

A compass needle is essentially a thin bar magnet. If it were free to move in all three dimensions, a magnet would line up along any local magnetic field line. Field lines are graphical ...

Quick – can you tell where north is? Animals as diverse as sea turtles, birds, worms, butterflies and wolves can, thanks to sensing Earth’s magnetic field. But the magnet-sensing structures inside ...