Finding the Walls of the Fort. All that remains of the palisade fence at James Fort are stains in the soil. In the spring of 1607, the fort walls were constructed of logs set upright into a narrow slot trench. The areas where the slot trench disturbed the natural clay subsoil showed up as a dark stain in the clay.
Largely known for her work with skin pigment, or melanin, cell biologist and cell physiologist Jewel Plummer Cobb (born 1924) has encouraged women and ethnic minorities to enter the sciences. An educator and researcher, she contributed to the field of chemotherapy with her research on how drugs affected cancer cells.
Chalcopyrite is one of the minerals referred to as Fool's Gold because of its bright golden color. But real gold is a more buttery yellow and is ductile and malleable. Chalcopyrite is also often confused with pyrite, although the latter has a cubic and not a tetragonal crystal system.