News Humans Periodic table gets some flex Committee’s revisions give chemical isotopes their due Share this:FacebookTwitterPocketRedditPrintEmail By Rachel Ehrenberg December 21, 2010 at 4:02 pm This article is only available to Science News subscribers. Subscribers, enter your e-mail address to access our archives. Client key* E-mail* Log in Not a subscriber? Science News is a nonprofit. Support us by subscribing now. Subscribe