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For years, many scientists warned of the dangers that asteroids pose to life on Earth, but for many years they weren’t listened to. Even after it was first proposed, in 1980, that the dinosaurs were killed off by a huge asteroid striking the Yucatán Peninsula in Mexico,1 there was, in the words of leading astronomer…
[T]here are very probably alien civilizations that are superhuman, to the point of being god-like in ways that exceed anything a theologian could possibly imagine. … As Arthur C. Clarke put it, in his Third Law: “Any sufficiently advanced technology is indistinguishable from magic.” In what sense would they be…
In a roleplaying game, the players take on the roles of people in a fictional world. Each player creates a character to portray, and together, the players create a story. In their imagination, the players experience the same challenges and rewards that their characters experience. To facilitate this, the rules of the…
A hundred years ago, the electric telegraph made possible—indeed, inevitable—the United States of America. The communications satellite will make equally inevitable a United Nations of Earth; let us hope that the transition period will not be equally bloody.