Ancient Pilbara rocks give students a glimpse into life on Earth and Mars billions of years ago

What was Earth's environment like 3.5 billion years ago and what was Mars like when it was warm and wet?
 
They are questions UNSW researchers Luke Steller and Bonnie Teece are trying to find an answer to as part of their doctorate studies — with the continuing help of NASA scientists and school students on the other side of the country in Western Australia. You can check out the full article here.