News Physics Holy moley Refining Avogadro constant could lead to a more reliable kilogram Share this:FacebookTwitterPocketRedditPrint By Marissa Cevallos October 18, 2010 at 6:46 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