A Random

SCIFI.radio story

Earth is invaded by a swarm of sentient nanobots enormous amorphous plasmoid dinosaurs who perceive us only as a food even though they are radioactive who tend to stutter under pressure when confronted by a slap to the side of the head with a large fish , but scientists create a new weapon which kills them all.
The End.but they die from catching the common cold.
The End.