Ugh, the choices for safer cooking have been bleak. Teflon's out. I was astounded when I learned years ago that heating Teflon and non-stick coatings to medium and high heat causes enough air pollution to kill a pet bird. Not only does Teflon harm air quality, but its continued use has been linked to numerous health problems, and is harmful to factory workers.
According to Healthy Child, Healthy World:
"In a recent report submitted to the EPA, a scientific advisory board declared perfluoroctanoic acid (PFOA)--a chemical used in the manufacturing of Teflon and other non-stick, stain-resistant coatings--a “likely human carcinogen.” Animal research has indicated that high levels of PFOA cause cancer, liver damage, growth defects, and damage to the immune system.