All Charged Up!Award winning author illustrator Don Brown explores the history of electricity in this installment of the Big Ideas That Changed the World series. In 600 BCE, the Greek mathematician Thales observed a seemingly strange phenomenon: amber, when rubbed with a cloth, had the ability to attract lightweight objects like feathers, straw, and leaves. He had unknowingly discovered an electric charge. His experiments wouldnt be picked back up until about 2,000