Thomas Alva Edison was born on February 11, 1847, in Milan, Ohio, the youngest of seven children. His family moved to Port Huron, Michigan, when he was seven years old. Edison's formal education was limited - he attended school for only a few months before his teacher dismissed him as "too dull to learn anything." His mother, Nancy, took over his education at home.
From an early age, Edison showed an insatiable curiosity about how things worked. He set up his first laboratory in his family's basement at age 10, conducting chemical experiments and building telegraphs. At 12, he began selling newspapers and candy on the Grand Trunk Railway, where he also published his own newspaper and set up a mobile laboratory in a baggage car.