The murky principles of time and time travel are a slippery slope with a surplus of paradoxes, loopholes, and anomalies — enough to make one’s mind burst from the efforts of understanding. They are probably best defined by Doctor Who‘s 10th Doctor, David Tennant, who describes the infinite complexities of time as a “big ball […]

BOSTON — New genetic data helps tell the story of how COVID-19 arrived in Massachusetts, exploded across a hotel conference center, wormed its way into a nursing home, repeatedly struck a homeless shelter, and contributed to the virus’ march around the globe. Although parts of the story have already been told and […]