In the 1950s, mass hysteria centered around the threat of nuclear holocaust. This fear persisted through the 1980s, but when the Soviet Union evaporated, people forgot about nuclear annihilation. Instead, here in 2015, we teach our kids that a failure to recycle could destroy our planet. We've come a long way. 1959's "Invisible Invaders" uses the fear of nuclear annihilation as it's backdrop, as an alien race invades Earth fearing human technology with the atom could peril the entire universe. This film is often lumped with "Plan 9 From Outer Space" in their campiness. However silly this movie might appear, at least the protagonists were not afraid of plastic bags.