In 2005 NASA experimented with a low-pressure greenhouse to grow plants on this carbon dioxide-rich planet
[DOC] [TLE] Greenhouses for Mars - Science Mission Directorate - NASA [PAR] Feb 25, 2004 ... "When you get to the idea of growing plants on the moon, or on Mars ... Left: An 
experiment related to Ferl's: Lettuce growing in a low-pressure ... Ferl's research 
will improve greenhouses not only on other planets, but also on spaceships.