6 August 2013
Updated at 20:14 ET
Boulby mine: Underground life gives alien clues
Rebecca Morelle
Science reporter, BBC World Service
Prof Charles Cockell explains why microbes living deep underground could tell us more about the potential for life on other planets
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Learning whether extraterrestrial life exists is one of the biggest challenges of science - but now a mine in the north-east of England could hold the key. Researchers believe studying the tiny organisms living deep underground could help them to understand whether life could thrive beyond the Earth.
link-
http://www.bbc.co.uk/news/science-environment-23522734