Feb 2, 2020
In this episode, we trace the development of roads from their pre-historic roots (or routes) to the development of the massive arterial network of the Roman Empire.
Jan 9, 2020
Some recent media accounts have speculated that the red supergiant star in the constellation of Orion is about to explode in a cataclysmic supernova based on recent observations of the star's dimming brightness. We examine the evidence and offer a different explanation.