re: Replies to the pessimistic Radiation article in Scientific American!
http://blog.sciam.com/index.php?title=getting_nuked_on_the_way_to_mars&more=1&c=1&tb=1&pb=1
And the actual link to some replies with few big wigs! Like Chang Diaz: http://blog.sciam.com/index.php?title=getting_nuked_on_the_way_to_mars&more=1&c=1&tb=1&pb=1&template=popup#comments
