Traders work on the floor of the New York Stock Exchange after the closing bell on August 15, 2013 in New York City. - 

The Dow Jones Industrial Average gets some reshuffling--Alcoa, Hewlett Packard, and Bank of America will be taken off the index and companies like Visa and Nike are being added on.

The AFL-CIO votes on whether to broaden membership to include non-union workers and even other organizations.

Stephen Hawking wrote the best-selling popular science book of all time, creating a brand for himself and physics.

Follow David Brancaccio at @DavidBrancaccio