This story in New Scientist Magazine caught my attention several weeks ago – “Hunting for Mars-like life a kilometre below Earth’s surface”. Here is a link to the original story. Scientists are using the extreme environment of Boulby mine, a working salt mine in north-east England to look for extremophiles, the kinds of organisms which are able to live (and even flourish) in environments which we human beings would simply find impossible.
Scientists believe that the environment found in Boulby mine could be similar to environments found on Mars, so studying the extremophiles found deep underground in Boulby mine should help us in our quest to find evidence for life on other planets. This work will help NASA’s various rovers (both present and future ones) look in the most promising places for alien-life on the red planet.