The best clues to life on Mars could be in these Idaho fossils
Big Think -

Does life exist elsewhere in the universe? If so, how do scientists search for and identify it? Finding life beyond Earth is extremely difficult, partly because other planets are so far away and partly because we are not sure what to look for. Yet, astrobiologists have learned a lot about how to find life in extraterrestrial environments, mainly by studying how and when the early Earth became livable. While research teams at NASA are directly combing the surface of Mars for signs of life,...

In related news