Dr. Sanjay Gupta talks one on one with EPA administrator Lisa Jackson, asking for hard facts about the dispersants used in the Gulf of Mexico. Can they be potentially harmful to your health?

And, the largest U.S. recall on over-the-counter products -- are they safe for you and your family?

Plus -- he helped expose lead poisoning in the 1970s: how real is the threat of toxic chemicals today? You'll have the opportunity to meet Phil Landrigan, he's our Colorful Conversation this week.

Also, our Medical Mystery: did you know there are chemicals in your home that can make you sick?

All that and more on SGMD.