When you’re a student working with toxic chemicals, jarring alarms are not exactly a desired part of your process. Likewise, when you’re a facilities director, an annual expense of $30,000 to run a ...

A ventricular septal defect (VSD) is a hole in the septum, which is the wall separating the two lower chambers of the heart. In many cases, the hole closes on its own. A ventricular septal defect is a ...