Every day, millions of people pass through walk-through metal detectors at airports, schools, concert venues, courthouses, and office buildings. A vast majority barely think twice about this process ...

There are few places where the public are more vulnerable than on a packed train. The terror and panic on the southbound LNER ...

In a metal like copper, however, the outer electrons swim around freely and are shared by all the atoms. That’s why ...

In this video, we go scuba diving with underwater metal detectors and uncover an iPhone X and a watch buried beneath the riverbed. These items were likely dropped by swimmers or kayakers and lost to ...