Sharks don't have bones. They are a special type of fish known as "elasmobranchs", which translates into fish made of cartilaginous tissues. Even though sharks don't have bones, they still can fossilize. As most sharks age, they deposit calcium salts
Researchers found that unmelted planetesimals delivered crucial volatiles, like zinc, to early Earth, contributing to water's presence. This discovery aids the understanding of how water formed here and may also guide future studies on other planets' p
Mid-20th-century nude glamour photographers used chiaroscuro lighting to create artistic shadows, obscuring parts of the body to skirt censorship. This technique, inspired by classical paintings, kept images sensual yet refined, pushing artistic boundari
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 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.
Constantinople, the capital of the Byzantine Empire, fell to the Ottoman Empire on May 29, 1453. This event marked the end of the Byzantine Empire and is considered one of the key events that signified the end of the Middle Ages.
