The sediments forming the layers or strata at archaeological sites can be very rich in bone remains, but until now their possible fossil DNA content had not attracted the attention of paleoanthropologists. Now, a new technique developed by an international team, in which the Spanish National Research Council (CSIC) has participated, allows the remains of…

The CO2 level in Mars’ primitive atmosphere 3.5 billion years ago was too low for sediments, such as those found by NASA’s Curiosity exploration vehicle in areas like the Gale Crater on the planet’s equator, to be deposited. This and other conclusions are drawn from a paper written with the participation of researchers from the Spanish…