You can find the entire article at Stand to Reason.
I want to address something else, though. Part of my concern in this discussion of science vs. faith, religion or philosophy - those are all in that category - is that there is a bias. The bias is that science gives you objective truth that is based on facts, and all religion or philosophy can give you is absolute truth. This phrase "absolute truth" is put in quotations in the letter, meaning that all philosophy and religion give you is dogma -- wishful thinking that people hold to be absolute while they ignore the facts. That seems to be the sense of things in this letter.
One statement that gets to the point of my objection goes like this: "Mr. Koukl does not step up to the challenge that science is able to meet in giving objective information, as he is using subjective opinions rather than objective facts to argue his case." There you go. My opinions are subjective because they don't have to do with science and you can't put them in a test tube. On the other hand, anything that can be put in a test tube is objective fact. He does talk about the liabilities of science, but it doesn't seem like he really takes his own words seriously. Because objective facts are assessed through subjective analysis. I'm not saying that you can't reach objectivity, but everything must be subjectively assessed in some fashion. So, just the fact that I have my personal opinions doesn't mean they're wrong. You can't just dismiss them as being mere subjective assessment.