How superstitions spread

Ancient Roman leaders once made decisions about important events, such as when to hold elections or where to build new cities, based on the presence or flight patterns of birds. Builders often omit the thirteenth floor from ...

How smart technology gadgets can avoid speed limits

Speed limits apply not only to traffic. There are limitations on the control of light as well, in optical switches for internet traffic, for example. Physicists at Chalmers University of Technology now understand why it is ...

Government to require cars be able to talk to each other

All new cars and light trucks would be able to talk wirelessly with each other, with traffic lights and with other roadway infrastructure under a rule the Transportation Department proposed Tuesday. Officials say the technology ...

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