More than any other invention of the past 150 years, the telephone has transformed how we communicate and conduct business. But how was it invented, and why did it have such a profound impact? This course explores Alexander Graham Bell's groundbreaking 1875 concept for transmitting sound over an electric wire, his struggles to commercialize the telephone with his father-in-law, Gardiner Hubbard, and his rivalry with inventors Elisha Gray and Thomas Edison. We will also examine the rise and fall of AT&T as a corporate giant and the evolution from wired networks to today's cellular and smartphone technologies. Bernard (Bernie) Carlson is Vaughan Professor Emeritus of Humanities at the University of Virginia and an expert on invention, entrepreneurship, and the role of technology in society. He has received the Sally Hacker Prize from the Society for the History of Technology and the William Middleton Prize from the Institution of Electrical and Electronics Engineers. Carlson has also filmed Understanding the Inventions that Changed the World. Now based in Ireland, he directs the MS program in AgInnovation at the University of Galway, where he trains adult learners in product development, startups, and sustainable farming.