Although the Earth’s magnetic field is reliable enough for navigation and is also essential for blocking harmful solar emissions and for improving radio communications, it’s not a uniform strength ...

Most people assume a compass will behave perfectly, no matter where you take it, but the magnetic pole is a bit of a troublemaker. The rules you rely on everywhere else on the planet start to wobble ...

A team of physicists and engineers at the CU Boulder has discovered a new way to measure the orientation of magnetic fields using what may be the tiniest compasses around—atoms. The group’s findings ...