When you see an ad sponsored by the chemical industry espousing the wonders of chemicals, you probably roll your eyes like most of us. But how much does it influence our attitude towards chemicals? As consumers, we may do our best to avoid toxins and carcinogens, but they're still everywhere we turn – from our food and clothing to the walls in our houses. This week we hear from Ken Geiser, whose new book, "Chemicals Without Harm," provides a road map for sound policing of the chemical industry. By focusing on what we know works – from greener chemicals to greater transparency to the templates provided by regulatory bodies beyond our borders – Geiser lays out a better way to live in our chemical world. Produced by Alex Wise.