NASA Rover Detects Macromolecular Carbon in Martian Rocks, Hinting at Ancient Habitability but Not Proof of Life
To the point
Perseverance found macromolecular carbon in Martian mudstones, a possible marker of ancient life as well as a product of geology, which implies Mars may have had habitable conditions with organics but requires Earth-based analysis of returned samples in the 2030s for a definitive answer, a view shared by Kyle Uckert, John Bridges, and Mark Sephton.
