New Curtin-led research has revealed that water played a far bigger role than previously thought in shaping Earth's first ...

A rock shaped like an arrowhead on Mars ... Scientists have also observed veins of calcium sulfate, suggesting water flow in ...

Over time, the biosphere has shaped conditions on our planet ... that has been eroded by water. Limestone: Sedimentary rock composed of calcium carbonate. Microbial mat: Filamentous microbes ...

A rock shaped like an arrowhead on Mars ... Scientists have also observed veins of calcium sulfate, suggesting water flow in the past. Although non-biological processes cannot be ruled out, analyses ...