CNN 25: SCIENCE & TECHNOLOGY
'In 1991, 8 entered <a href="http://www.j-archive.com/media/2005-05-11_DJ_24.jpg" target="_blank">this</a> <a href="http://www.j-archive.com/media/2005-05-11_DJ_24a.jpg" target="_blank">replica</a> of the Earth's ecosystem to test the feasibility of a self-contained space colony'
the Biosphere