Lake Breach Floods Eroded Surface of Early Mars, Study Says

A dead body left on Mars would dry out and mummify so well it would make the ancient Egyptians jealous. The first few stages (algor mortis [body cools], livor mortis [blood pools], and rigor mortis [muscles stiffen]) would still take place. But there could be no other overt signs of decomposition.

Oxygenic Photosynthesis and Living Lineages of Cyanobacteria Evolved in Archean Eon, Study Suggests

Getting beyond small talk: Study finds people enjoy deep conversations with strangers