Well, don't feel anxious. Charles Stross is a science fiction writer and dreaming up (or researching) interesting calamities pays his bills. If humans are an ant hill, you're just one ant, and unless you work for NASA, ESA, SpaceX, or (at the very least) have a prestigious professorship at a major university and/or serve as the science advisor to someone with real political power, there's nothing you need/can do about this one.

So relax, and enjoy a good setting for a dystopian story.