Naomi Oreskes is a science historian at Harvard University, and the author of several books, including Merchants of Doubt and Why Trust Science? She has extensively researched the efforts of the fossil fuel industry to deny the reality of manmade climate change and its links to the tobacco industry.
Jeff Nesbit is the author of Poison Tea, which exposed for the first time the close ties between the tobacco industry and Koch donor network front groups. He once helped lead efforts by the FDA to regulate cigarettes.
The United States bears its share of responsibility for this crisis that is destroying Ukraine and placing the world in "unprecedented danger," as the Bulletin of the Atomic Scientists' new Doomsday Clock statement calls it.
Per- and polyfluoroalkyl substances are a growing concern because of the many health impacts associated with exposure and their tendency to persist in the human body for months to years and in the environment for thousands of years.