I have made an internet discovery which will prove itself extremely useful in my upcoming microbiology class. It's called Microbe Wiki, and it's a great online catalog of microbes. It's certainly not complete, but for beginning microbiology, it is a very handy tool.
Check it out: http://microbewiki.kenyon.edu/index.php/Taxonomy_Index
In other microbiology news, scientists believe that the microbe "Methanosarcina barkeri" may survive the martian atmosphere. M. barkeri is a methanogen (survives off of methane, which has been detected on Mars), is able to handle long dry spells and a wide range of temperature differences.
Learn more here.