When I was younger, I would watch “Batman” on my black-and-white television after school. Usually, Batman would face either the Joker, the Penguin, the Puzzler, Catwoman or any one of his usual opponents. However, on some occasions, Batman would have to face them all at the same time. The post What if every germ hit you at the exact same time? An immunologist explains<em> — Joseph Larkin III</em> appeared first on Explore Magazine.