Science Life on Mars: Could fossil record be trapped in ancient lake mud?

A team of scientists from Brown University found that only 79 lake beds contained deposits of minerals that hint at clays on the surface.

Goudge, T.A., Head, J.W., Mustard, J.F. and Fassett, C.I./MOLA/NASA

The mud and clays ideal for preserving fossil records are less common around Martian lakes than on Earth. A new survey of 226 ancient lakebeds on the Red Planet reveals that only a third show evidence of such deposits on the surface today.