Deep microbes live long and slow

A diverse range of life forms exists deep below Earth's surface, scientists have concluded, but they live at an incredibly slow pace. Long-lived bacteria, reproducing only once every 10,000 years, have been found in rocks 2.5km (1. via Pocket http://www.bbc.co.uk/news/science-environment-23855436#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa