system
Given the following post, respond as if you're commenting on Reddit:
human
[The Road] "There was a lone sheer of bright light, and a series of low concussions". I'm too young to remember this event... What exactly happened, that caused the end of our World?

I don't know how long ago it, was.. 10+ years easily? What happened?
gpt
The only thing that makes sense is some sort of meteor impact.

The sky is always overcast and all plant and animal life is dead. And there's no indication of radiation to suggest a nuclear war (assuming that can cause that level of destruction).