It seems that we are completely alone in the universe. But simple reasoning suggests that there should be an abundance of alien civilizations. Maybe they're all out there, but they are keeping their ...

There’s a paper posted to the internet now that, since getting somewhat randomly picked up by the Guardian, is making the rounds in a pretty real way. Odds are decent that you’ve already heard ...

In 1950, during a lunchtime conversation with colleagues at the Los Alamos National Laboratory, famed physicist Enrico Fermi asked the question that launched a hundred (or more) proposed resolutions. ...