Martian Landscape, 1997: 
Image Source:
Section VII, Unit B: Future of Humanity on Earth
Check the news for Natural Disasters

The asteroid hazard is our most serious threat, because it's the only one that could instantly eliminate society.
Course Contents
Activities (things you must do):
Review extraterrestrial colonization: Is terraforming Mars the ultimate alternative for human survival?
Related links to Mars Exploration, Colonization and Terraforming  <>
Compare Space Settlement and terraforming 
Is there life in the Ancient ice of Mars? See National Geographic Magazine, January 2004 issue.
or  Could there be liquid water, and with it signs of life? go online: <>
The NEAR satellite.