TVs were invented in 1928 by Philo Farnsworth. Early TVs had small black and white screens but technology improved over time, with the introduction of color TVs, remote controls, and flat screen TVs. While TVs provide entertainment and a way to stay informed, they are not essential and overwatching TV can be unhealthy, turning people into "couch potatoes." Before TVs existed, people entertained themselves with activities like listening to the radio.