What did Galileo help make?Who made milk safe to drink?Who were the first men on the moon?Where did Leonardo da Vinci come from?Which race is named after an ancient runner?Which emperor did Marco Polo meet in China?Who is known as the inventor of the telephone?What were the names of Christopher Columbus's ships?Which two brothers wrote the world's favourite fairy tales?Who were the world's very first hot air balloon passengers?And many more puzzles to solve!