Chapter 9: Habitable zones

 
Deglaciation and carbon dioxideNews_%26_Articles/Entries/2007/10/18_Entry_1.htmlshapeimage_3_link_0
Habitable ClimatesNews_%26_Articles/Entries/2008/6/5_Habitable_Climates.htmlshapeimage_4_link_0
Water ice on MarsNews_%26_Articles/Entries/2008/6/23_WATER_ICE_ON_MARS.htmlshapeimage_5_link_0