27 September 1996
Vol 273, Issue 5283

About The Cover

Methane clathrate hydrate, an icy compound capable of sustaining its own combustion, displays intriguing formation kinetics as well as unusual plastic flow properties. Although naturally occurring methane hydrate may harbor the largest untapped reservoir of natural gas on Earth, the material properties of this ephemeral compound are not yet well understood. See page 1843. [Photo: John Pinkston and Laura Stern]