Ancient Roman concrete arches contained volcanic ash, which helped them self-heal when cracks formed by reacting with water. This made them incredibly durable, lasting for millennia.
Zebras are intelligent and sentient animals. Zebras stand between 1.10 and 1.50 meters tall at the shoulder and can weigh up to 450kg. Despite their size, they are fast runners, reaching speeds of up to 65 km/h to escape predators.
Ancient Egyptians created artificial plants. They crafted fake flowers and garlands from materials like painted linen, papyrus, and thin metals to decorate temples, tombs, and homes. This practice dates back to around 2500 BCE, making Egypt one of the ea
