While the concept of time travel has long captured public imagination, modern physics actually approaches time in a much more subtle manner. Instead of moving people or objects through history, ...

FIRST LOVE AND LAST—Howard Coxe— Harcourt, Brace ($2). Time, measured by minutes or months, seconds or centuries, is as trickily undefinable as electricity. Author Howard Coxe’s well-told tale ...

Physicists have finally turned a long standing thought experiment into a laboratory reality, showing that electromagnetic waves can be reflected in time as cleanly as light bounces off a mirror in ...