“Somebody may be blocking the light beam, so there's no counting — sometimes for extended periods,” he said. “Or people may be walking side by side, and the system would count them as one, because ...

We asked the alumni below, celebrating a birthday today, December 19, "Where are you now?" Here's what they said ...

We're searching for undergraduate students dedicated to exploring the different ways business can be a force for good in society. Current students in their freshman, sophomore or junior year of a four ...