Scientists have collected an unprecedented sequence of rock samples from the shallow mantle of the Atlantic Ocean that bear signs of life, unique carbon cycling, and ocean crust movement.
The aim of the expedition was to determine how mantle rocks are brought to the seafloor and react with seawater – such reactions may fuel life in the absence of sunlight, which may be how life developed early in Earth’s history, or on other planets.
Signs of life found in Earth’s mantle
