Splurging on meaningless things is too easy to do. Determine which transactions are really important by remembering you have a finite number of dollars to spend in your lifetime. It's easy to get paid ...

The fabric of spacetime is roiling with vibrating quantum fields, known as vacuum energy. It's right there, everywhere we look. But could we ever get anything out of it? Two possiblities exist: either ...

You may think you can't have too many friends - but research shows there are a finite number of people you can have in your social circle. Think of a cup filled with water. You try to add one drop to ...