Being book smart is not the same as being street smart. Just because someone has a pile of degrees doesn’t mean that they have excellent problem solving or social skills. At the same time, a person ...

A hands-on physics experiment demonstrates how a basic self-braking pulley works, explaining the forces and friction that allow it to stop itself without extra mechanisms.

In his decades-long career in tech journalism, Dennis has written about nearly every type of hardware and software. He was a founding editor of Ziff Davis’ Computer Select in the 1990s, senior ...