Discover the molecular structure of dioxins and benzene. Lizzie Caldwell reports that benzene and dioxins are both cancerous. In fact, the benzene molecule is present in all the various dioxins. However, the simple benzene molecule breaks down in a week, while dioxins last up to 10 years. (Please note that Caldwell’s allusion to Viktor Yushchenko’s alleged dioxin poisoning has not been fully substantiated, in part because he refuses to be thoroughly tested.) Lizzie Caldwell, sciencetranslation.wordpress.com, February 5, 2010.