If microbe fossils are on Mars, a rock quarry in Algeria might lead us to them

a pinkish-brown rock resembling a rose

Scientists searching for the fossilized remains of ancient microbes on Mars now have a better idea of what signs they should be looking for, thanks to a new study of Earthly microbial fossils embedded in the mineral gypsum that was produced when the Mediterranean Ocean dried up over 5 million years ago. Mars was once … Read more