Maybe they're all out there, but they are keeping their distance. Welcome to the zoo (hypothesis). The story goes that in the summer of 1950, eminent physicist Enrico Fermi was visiting colleagues ...

The mirror doesn’t lie. You look into it and the person peering back at you sure seems familiar, but older. More fine lines around the mouth. Grayer hair. Dimmer eyes. Dryer skin. All this happe ...