Scientists Found a 12,000-Year-Old Monument—Turns Out It May Be Humanity’s Oldest Calendar
Carvings on a 12,000-year-old monument in Turkey appear to mark solar days and years, making it possibly the oldest solar ...
Gemological Institute of America1d
Emerald History and Lore
Photo by Chip Clark, courtesy Smithsonian Institution, National Museum of Natural History. Emerald’s lush green has soothed ... Cleopatra was known to have a passion for emerald, and used it in her ...