News Physics Metallic hydrogen makes its debut, maybe German scientists claim to have produced a long-sought material Share this:FacebookTwitterPocketRedditPrint By Devin Powell November 16, 2011 at 5:18 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