We've found microbes almost everywhere, and they make up the vast, vast majority of life on this planet. In Lake Vostok's case, the first reports were in 1999,

We've found microbes almost everywhere, and they make up the vast, vast majority of life on this planet. In Lake Vostok's case, the first reports were in 1999,[1] and yeast and fungi have been isolatef from ice cores collected at depths more than 3500 m below the surface.[2] Exciting stuff, no? *: Posting from school, so sorry if these aren't free. [1]: http://www.sciencemag.org/content/286/5447/2144.short http://www.sciencemag.org/content/286/5447/2144.short [2]: http://rspb.royalsocietypublishing.org/content/279/1728/474.full http://rspb.royalsocietypublishing.org/content/279/1728/474....