In a cave on the far side of the moon. Or, encode the information to be preserved in the DNA of various types of creatures on earth who between them various dif

In a cave on the far side of the moon. Or, encode the information to be preserved in the DNA of various types of creatures on earth who between them various different number of individuals, lifespan (some very short, some very long) ubiquity across the planet, vulnerability to ecological change. Cockroaches, long living trees, plankton, mosquitoes and dare I say it, humans.