If in the Middle Ages toxic substances, natural and synthetic, were used locally, in our time they are produced and used on an industrial scale. Today, chemicals or traces of them can be found almost everywhere. We consume them with food and apply them to our skin and hair. Our clothes, houses, cars, favorite gadgets - all this is created with the “participation” of chemistry dangerous to health. You will learn from the book about what is happening in the world of toxicology now, how and why scientists are developing ever new deadly poisons, under what beautiful they are presented to us through masks, how they penetrate into our body and what consequences they cause, and, of course, about those small thoughtless crimes against the environment that we commit every day without thinking.