Giving your time for a cause has its many altruistic perks. From getting to meet new people to helping the less fortunate in your community, unpaid work does wonders for […]
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.