4-billion-year-old 'Rosetta Stone' found in Sahara Desert could unlock the secret history of water on Mars
A rock discovered in the Sahara Desert formed more than 4.1 billion years ago, making it one of the oldest Martian meteorites ever found. The ancient space rock offers a rare glimpse into the formation of Mars' early crust and its possible interaction with water.
We haven't written up this one. Space.com has the full story — the link below goes straight to it.