redOrbit: Australian scientists said Monday they are planning to develop a "molecular sponge" which they hope will soak up carbon gases and help fight greenhouse gas pollution. Researchers at Sydney University have produced crystals full of small holes that can soak up gases like carbon dioxide, which they believe will eventually be used in places where these gases are produced. "You could think of them a little bit like your kitchen sponge," lead researcher and postdoctoral fellow …