It's a new article I wrote available at DB Skeptic. Here's the introduction:
"Life may have been the result of intelligent aliens sending bacterium to Earth. This theory is called “directed panspermia”. It was proposed thirty-five years ago by Francis Crick, co-discoverer of DNA, and Leslie Orgel, a highly respected British chemist. I found the original paper they published. Here I examine it and provide some comments."
By the way, this post is my 500th!!