Dead Worlds

A “dead world” is an alternate
Earth where life never developed. In
some cases, Earth is at a different dis-
tance from the sun, or has no moon.
Dead worlds do not have breathable
atmospheres. Over a dozen of these
worlds are known. They can be
exploited for mineral wealth. They
are also a convenient dumping
ground for wastes too loathsome to
keep on the same world with any
human being.