Iron present ... The oldest fossil evidence of multicellular animals, or metazoans, are burrows that suggest smooth, wormlike creatures live 900 mya or more. Found in rocks in China, Canada ...

In a new paper, Jordan Jensen and Alexis Ault introduce a new forensic tool designed to enhance our understanding of how ...

Rocks containing iron oxide can only form if oxygen is present. Dating these rocks gives scientists evidence of when oxygen first built up in the atmosphere. Fossils Life processes can change the ...