The universe appears fond of special numbers. Some come from geometry, like π or the square root of two. Some, like the fine structure constant, connect stars being able to shine to why buttered bread ...

Dr. McLaren is an associate professor at the University of Maryland, Baltimore County, who studies policies to combat infectious disease epidemics, including Covid-19. The United States has vaccinated ...

In a rapidly advancing scientific discipline, new contributions will supersede older ones. This selection in favor of recent literature should be observable in the distribution of footnote citations ...