
You'll find it in the records that on Tuesday, May 7, the Earth's Some "shooting stars" have made everyone blind, as mentioned in the first chapters:

What is the cause of the blindness catastrophe? Or rather, what evidence do we have to support the different options here? Was it caused by extraterrestrial material in the meteors, or by human-manufactured weapons, either a deliberate attack or something accidentally triggered by the meteor shower? What evidence can we draw on either from the novel itself, from other Wyndham novels and his general style, or from other things he wrote about this novel? Why would a meteor shower make everyone blind? I recall one conversation between Bill and Jo where they speculate about what might really have caused it, but that's all. But the mass blindness, although it's the main catastrophe that puts everything into motion, is more of a mystery. They are a massive danger but at least well understood.


The triffids are perhaps the best known aspect of this story in popular culture, and their origins and nature are covered in detail in the novel, the main narrator character being something of an expert on them. In John Wyndham's classic apocalyptic novel The Day of the Triffids, events are put into motion by a double catastrophe: the mass blindness of nearly everyone on Earth, apparently caused by a meteor shower, coincides with the appearance of carnivorous plants which can kill people and which proceed, in the near absence of sighted people, to take over much of the world.
