Marco Polo reverently described Khubilai Khan and his palaces, along with paper money, coal, postal service, eyeglasses and other innovations that had not yet appeared in Europe. He also told partially erroneous self-aggrandizing tales about warfare, commerce, geography, court intrigues and the sexual practices of the people who lived under Mongol rule.
Lind's experiments at sea tested some potential cures for scurvy. His experiments were important because he discovered the use of citrus fruit as a cure for scurvy. It ranks as one of the first clinical experiments in the history of medicine.