Emerald green, a verdant hue popular during the Victorian era, featured in everything from wallpaper to confections. Now, experts are warning about the pigment painted onto some books of the period.

In early August, the terraced fields of Shanbei village in Xupu county, Huaihua of Hunan province, stretched their ...

You probably do not need us to tell you that Arsenic is not healthy stuff. This wasn’t always such common knowledge, as for a time in the 19th century a chemical variously known as Paris or E… ...