Allen Grossman has been doing things with tears for decades. "Stars are tears falling with light inside," begins the title poem ofThe Woman on the Bridge over the Chicago River (1979). The moon is a ...

The NFL playoffs got underway this weekend as teams competed in the Wild Card round, but how do things work in the next stage ...

If you need to measure a distance, it is tempting to reach for the ubiquitous ultrasonic module like an HC-SR04. These work well, and they are reasonably easy to use. However, they aren’t without ...

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