It is in paint, paper, sunscreen, cosmetics, toothpaste and food. The International Agency for Research on Cancer (IARC) lists it in its Group 2B, “possibly carcinogenic in humans.” In Europe it is...
An attractive amethyst geode sits on my desk. Geodes are rocks with an internal cavity that is filled with crystals of a mineral. In the case of amethyst that mineral is quartz, tainted with iron...
In the 1980s, Dr. Albert Kligman, an American dermatologist made an interesting observation. Patients being treated for acne with retinoic acid saw an improvement in their wrinkles, an...
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