Space/Science — HabitableZone

Space/Science

Rare Earth Debate Parts 1-4
Mark Eby — (archived)

Rare Earth Debate Part 4: Avoiding Doom
http://www.space.com/scienceastronomy/rare_earth_4_020724.html

Rare Earth Debate Part 3: Complex Life
http://www.space.com/scienceastronomy/rare_earth_3_020722.html

Rare Earth Debate Part 2: Alien Proximity
http://www.space.com/scienceastronomy/rare_earth_2_020717.html

Rare Earth Debate Part 1: The Hostile Universe
http://www.space.com/scienceastronomy/rare_earth_1_020715.html

A related article I came across recently
Why ET Hasn't Called
http://www.sciam.com/article.cfm?articleID=000800AC-8550-1D2B-97CA809EC588EEDF&catID=2

I find his lifetime estimate overly pessimistic but possibly correct. Higher technology could potentially decrease the length of civilization if most tend to ignore the dangerous side of technology like some here wish to. I am very pro technology, but feel we have to stay on guard for possible negative consequences.

Regards,
Mark

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