Copyright exists to protect a creator's right to the proceeds of their creative output. Copyright is pretty broad. If I tell a different story with your characters I'm still violating copyright.
Patents exist to protect an inventor's right to the proceeds of their invention. If you invent a true hoverboard and I buy one, reverse engineer it, and sell copies I'm in trouble. But if I am merely inspired by your creation to go invent my own hover tech that works differently I can sell that just fine.
Descriptions of the real world as it already exits do not get copyright or patent regardless of the work put in. No matter how good a job you do creating a map of New York you can't prevent someone else from making a map of New York.