Known as the "poison of kings" for its role in palace coups and the "king of poisons" for its effectiveness, arsenic is one of the world's most notorious poisons—yet it surrounds us in the natural world and has appeared in medical and cosmetic contexts for thousands of years. Investigate our complex relationship with the 33rd element with Ron Hipschman.

In the spirit of amplifying the Black Lives Matter movement and to avoid any appearance of having appropriated that title, our series of talks formerly called Everything Matters: Tales from the Periodic Table will now be called, simply, Tales from the Periodic Table. Please excuse the former title on videos made in the past.