Those who have an inkling for some real travel might think about reading this interesting piece from How Stuff Works on terraforming Mars.
‘…there are many who suggest that the human race could one day make Mars its second home. Such an effort to colonize Mars would begin with altering the current climate and atmosphere to more closely resemble that of Earth’s. The process of transforming the Martian atmosphere to create a more habitable living environment is called terraforming.’
Don’t you think it’s astonishing that we’re even considering this stuff?