The link below has been marked as a bad link because it no longer seems to work. You can click on it to continue. Prepare do be disappointed.
Bad Link:
reasons.org/articles/probability-for-life-on-earth-apr-2004
Or you can try to see if you can find it in the Internet Archive
web.archive.org/web/*/https://reasons.org/articles/probability-for-life-on-earth-apr-2004
