We Owe Our Lives to 3-Billion-Year-Old Stromatolite Fossils

What’s the most impressive fossil you ever saw? For most people — those who aren’t paleontologists — the answer would probably veer towards the A-list of ancient creatures: dinosaurs, pterosaurs and other long-extinct megafauna whose size and majesty have made them the showpieces of museums and the inspiration of film franchises for decades. But what if someone told you that you’ve been overlooking the real rock stars of the fossil record for all these years? What i