Chemists look for cleaner, cheaper rocket fuel

(PhysOrg.com) -- Mark Gordon recently held up a small vial containing three liquids layered one on top of another. That middle layer, the brownish one, is an ionic liquid, Gordon explained.

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<p><a href="http://www.physorg.com/news147422802.html">Chemists look for cleaner, cheaper rocket fuel</a></p> <p>(PhysOrg.com) -- Mark Gordon recently held up a small vial containing three liquids layered one on top of another. That middle layer, the brownish one, is an ionic liquid, Gordon explained.</p>