A man gains powerful psychic abilities from his parents’ exposure to radiation, and he is hunted by the government until a hidden group of like-powered people contact him and bring him to their community.
Scientists build a calculator that gets bored with them and transports itself to another planet with an advanced civilization that will pose more interesting questions.
When a nurse gives an ambulance driver a medal of the patron saint of travelers he is surprised to hear from people at his destination that the bridge he crossed to get there had been washed out hours ago.
Zinyov the dictator forces a scientist to develop a virus that will kill everyone in his country that doubts his ability to lead them. Its only victim is Zinyov himself.
Human colonists are forced off Mars and so attempt to return to Earth only to be rejected by the cavemen remnants left after atomic war. They go into orbit around Earth and wait for the cavemen to evolve to the point that they will no longer be considered another race.