Aluminum: The most abundant metal on earth. And it has no natural, biological purpose. But over the past 100 years aluminum has become a necessity for modern life. We use aluminum in industry, packaging, medicine, and cosmetics. But from its mining through its manufacture to its use, it is also an incredibly destructive metal. It’s a substance that is used to produce allergies in lab animals, and aluminum’s appearance in drinking water is linked to Alzheimer’s disease and increased cancer rates.