Some people love animals and want to spend as much time as possible with them. They might decide to become veterinarians, looking after sick animals. How else can people care […]
The helicopter was invented by the Chinese in the 4th century, more than a 1,000 years before Leonardo da Vinci. It was called the Bamboo Dragonfly and could fly 25 feet (7.6 m) up and down. The first modern helicopter was invented by the French.