Venomous Earth is the story of the worst chemical disaster in history. It starts in Ancient Greece, touches down in today's North America and takes in William Morris, alchemy, farming, medicine, mining and a cosmetic that killed two popes.

ANDREW MEHARG is Professor of Biogeochemistry at the University of Aberdeen in Scotland where he studies and teaches on the impact of pollutants on the environment. His particular interest is how arsenic interacts with plants, animals and humans. In this capacity he has advised national and international government and aid bodies. Andrew has published numerous academic papers, book chapters and popular press articles on his research.