Alone in the Universe: A safe choice?

Open letter to SETI:

There are those at the SETI program who wish to send signals out into space — hoping a reply will make it easier for us to discover life in the universe. I’ve addressed this concept before, however, there are those who fear such an act would invite unwanted visitors from a civilization far more advanced than our own. So the question remains: should we be concerned about distant civilizations looking to Earth with ideas on our natural resources? Continue reading