Journey Into Mystery #94

Loki uses his magic to cause Thor's hammer to hit his head, turning him evil. Thor frees Loki, and the two terrorize Earth until the other Asgardians arrange for another blow to the head to reverse the change.

In the future, Earth is overpopulated, and even the very rich must work an hour on a farm each week to produce enough food. A rich man leaves Earth and finds a sparsely-populated and fertile planet to live on. He discovers that the plants are actually predatory, and that the few peaceful inhabitants are so short of food that he must work eight hours a day to feed himself.

A greedy landlord is captured by a time traveler who maintains a collection of 'dolls' consisting of miniaturized heartless people from different eras.