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. 2001 Jul 12;412(6843):209-13.
doi: 10.1038/35084148.

Decline and fall of the empire

K Zahnle  1
Affiliations

Decline and fall of the empire

K Zahnle. Nature. .

Abstract

"Are they worlds, or are they mere masses of matter? Are physical forces alone at work there or has evolution begotten something more complex, something not unakin to what we know on Earth as life? It is in this that lies the peculiar interest of Mars." Percival Lowell (in ref. 1, p. 3)

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