More than half a century ago, British-American physicist Freeman Dyson proposed the theory of what would come to be called a "Dyson sphere" or "Dyson swarm." In a nutshell, the Dyson sphere is "a system of structures orbiting [a] star, designed to intercept and collect its energy."
A baseball star earning $20 million a year could save nearly $2.5 million more annually by signing with an Arizona team instead of a California club....