Historians are occasionally forced to revise their preconceived notions after discovering something hidden in the shadows and ...

From the Antikythera Mechanism to Tesla’s so-called earthquake machine, history is full of inventions that vanished too soon. These lost machines raise one question: how advanced were we, really? UPS ...

Abstract: As an indoor positioning method, pedestrian dead reckoning (PDR) is crucial for positioning and navigation in environments where satellite signals are blocked, such as shopping malls, ...

Abstract: Urban flooding remains a critical challenge, exacerbated by inadequate drainage systems and the lack of timely early warning mechanisms. This paper presents a sustainable urban flood ...

Here’s what you’ll learn in this story: The first telegraph wasn’t really the first. In the fourth century B.C.E., Tacitus, a Hellenistic writer on the art of war, invented the hydraulic telegraph. It ...