This will attempt to re-do the URLs in the main message so they are clickable. Don't know why they were not.

http://www.preventcancer.com/publications/cancer-gate.php

http://www.consumerlawpage.com/article/dioxin.shtml

http://www.eponline.com/articles/69449/

http://www.philly.com/inquirer/health_science/daily/20090101_Heart_hospitalizations_fall_after_a_city_s_smoking_ban.html