Volcanic eruptions may sap oxygen from oceans, lead to ‘mass extinction’ of life on Earth – study

Devastating volcanic eruptions, caused by excess carbon in the atmosphere, could one day lead to the mass extinction of all marine animals, and possibly all life on Earth – so says a new study.

Curiosity rover analysis suggests Mars has oxygen-rich history

Analysis of rocks and sand by NASA's Mars rover Curiosity suggests Mars was once much more like Earth than previously thought.