What is really "toxic" and how do we measure it? How does bioaccumulation and biomagnification work, how do toxins affect Arctic ecosystems? What does the Mad Hatter from Alice in Wonderland have to do with the tragic story of the inhabitants of Minamata in Japan? Is Eating Fish Healthy? Can you get a Nobel Prize for a substance that has been harmful to the environment for decades and is advertising worth believing? Learn the secrets of ecotoxicology!