A toxic green pigment was once used to color everything from fake flowers to book covers. Now a museum conservator is working to track down the noxious volumes. During the 19th century, emerald green ...

Not just a tool for murder, arsenic was everywhere in the Victorian era. An abundant by-product of mining operations, arsenic was considered harmless in small doses, though its dangers were well known ...

Toxic books are in the news after four arsenic-laced volumes were quarantined from the shelves of France's national library. But how dangerous are these books? And how can you spot them? Newsweek ...