This week's C&EN

A few articles from this week's issue of C&EN:

• Cover: Virtuous materials cycles (by Melody M. Bomgardner)
• This Mitch Jacoby piece on liquid metals (specifically gallium alloys) is really cool. 
• The U.S. Geological Survey had a rogue chemist with an ICP-MS? (article by Jessica Morrison)
• Unexpectedly fascinating article by Alex Tullo on the decline of cellulose acetate sales due to declining cigarette sales. 
• Methane and sulfur trioxide to make methanesulfonic acid? (article by Michael McCoy)