Arsenic, Poison Books, and the Periodic Table of Death and Mystery

Arsenic? Really? Too easy since it’s one of the most toxic substances on earth. But when mixed properly arsenic creates some beautiful paint colors and dyes: rich lemon yellow, brilliant red-orange, and a gorgeous emerald green. And humans wouldn’t do anything stupid with those colors like dye cloth for clothes, decorate children’s toys, or use it in cloth book covers. Right?