Welcome to our live Web chat with the producers of our week-long series "Cancer & Environment: Searching for Answers."
Dr. Arnold Schecter will also join us today at 12:30 p.m.
He's a professor of epidemiology, human genetics and environmental sciences at the University of Texas Dallas, and he's been studying the health effects of toxic substances for over 30 years.
If you have any questions or comments for the producers, simply type them into the chat box below. We will try to address them in the order they are submitted. Or you can just sit back and watch the discussion.
Thanks for participating!