How nutritious are brains? Scientific answers on how zombies operate

Zombies are just regular people, or at least they were before - well, you know.

With that in mind and with Halloween approaching, The Washington Post asked experts in several fields to address some zombie mysteries based on what is known about human bodies and brains. They busted some tropes (aww!), left the door open on others (eek!) and made educated guesses about how and why zombies do what they do.