62812108_View_columns_by_John_G__Cramer__Subject_of_Column
The "Rare Earth" Hypothesis [Analog Issue] 09/00 [Column Code] AltVw102 [Subject of Column] 
A new book by an astronomer and a geophysicist argues that complex life must be very rare in our galaxy and our universe. We may be alone.
Subject index of Alternate View columns by John G. Cramer