Hello! Today I'm going to tell you about a group of chemicals that are formidable in the potential risks they pose to public health. Not only to us humans but often to the devastation of the environment too. It's no secret that chemicals are all around us. You and I are made up of chemicals, and so is the computer or smartphone you're reading this article on. In fact, everything on our planet, living or exanimate, is made up of different combinations of chemicals. They