Discover the fascinating process of growing vibrant crystals from potassium ferricyanide, copper sulfate, and potassium alum ...

Is there someone in your life who loves all things science, color and crystals? National Geographic's beautiful crustal science kit will allow you or your loved one to explore crystals in vivid color ...

I am a 1974 graduate of Warwick High School. During my freshman year, I had a science class, taught by William Felger. I remember Mr. Felger as a man of short stature, with a crew cut and an ...