Echoes of life : what fossil molecules reveal about earth history Molecular informants: a changing perspective of organic chemistry Looking to the rocks: immortal molecules and lifes first vestiges From the moon to mars: the search for extraterrestrial life Black gold: an alchemists guide to petroleum Deep sea mud: biomarker clues to climate history More molecules more mud and the isotopic dimension: ancient environments Revealed Microbiologists (finally) climb on board Weird molecules inconceivable microbes and unlikely proxies: marine ecology Revised Molecular paleontology and biochemical evolution Early life revisited Thinking molecularly anything goes: from mummies to oil spills doubts to new Directions