School breeds stress, and stress can be the cause of a whole array of health issues. While finding time to exercise can seem impossible it is important—but so is taking […]
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.