By Baruch S. Blumberg, Nobel Laureate and Director, NASA Astrobiology InstituteKeith Cowing, editor Astrobiology.com Note: this article first appeared in Ad Astra Magazine, National Space Society, Jan/Feb 2002.
By Baruch S. Blumberg, Nobel Laureate and Director, NASA Astrobiology InstituteKeith Cowing, editor Astrobiology.com Note: this article first appeared in Ad Astra Magazine, National Space Society, Jan/Feb 2002.