The Mongols Created the First International Postal System
Genghis Khan established the Yam (postal system), which allowed for fast, reliable communication across the vast Mongol Empire. Riders could travel 200 miles per day using relay stations.
Astronomers found white dwarf-main sequence binaries in young star clusters using machine learning and Gaia data. The 52 candidates provide insights into stellar evolution, Type Ia supernovae, and gravitational waves, linking early and late binary star p
Mozart's sister, Maria , was a child musical prodigy who toured with her brother across Europe as a duo. At 12, she was considered one of the best musicians in Europe, and some said better than her brother. This did not last. As a woman, she was not all
The first photo of a person was an accident. In 1838, Louis Daguerre took a photo of a Paris street that appeared empty due to the long exposure time—except for a man getting his boots shined, who stood still long enough to appear in the image.
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.
Skin is the body’s largest organ, making up about 16% of your body weight—and it’s constantly renewing itself. You shed nearly a million skin cells every day.
