Dark Matters – Dark Secrets (2005) is a continuing exploration into the area of melanin research. Melanin is commonly known as the substance that produces skin pigmentation, and this book will be valuable to any reader interested in the various effects of pigmented cells in the skin as well as the central nervous system. Astrophysicists use dark matter to describe the intriguing material in the external universe, and this Brainscientist uses the term dark matter to describe the neuromelanin in the brain of the internal universe.