There are all types of batteries: AA, AAA, etc but I have never seen a B battery. This batteries was they're still out there in the wild.

On the moon, there's no air to breathe, no breezes to make the flags planted there by the Apollo astronauts flutter.

There is no wind in the moon.

Since humans have iron in their bodies, the advantage would it have if a human was to sleep facing north is linked with prosperity and happiness and, most of all, the best quality of sleep.