Have you heard about 5G? If you have, do you understand what it involves and what it might mean for you and your family? If you use a smartphone—and even if you do not—you should be concerned, because it’s quite likely 5G will be coming to where you live in the near future. There is increasing excitement about what it will make possible. However, there are also grave concerns about how it will impact our collective health, the environment, and cybersecurity. Will it be revolutionary—or a planetary catastrophe?