The magnetized needle of a conventional compass wants to align with Earth’s magnetic field—helpful, unless you’re near the ...

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

Losing GPS would mean losing a lot more than Google Maps. The technology is integrated into everything from lights that turn ...

Hiking in the off-season can often come with great benefits — quieter trails and atmospheric, seasonal landscapes, in particular — however, it can also mean treacherous conditions. Here’s how to stay ...