Fortunately, a sudden drop in worldwide temperatures eliminated the zombie virus and humanity could thrive once again, this time in parkas.
"I've got dreams like you--no really!--just much less, touchy-feeley. They mainly happen somewhere warm and sunny on an island that I own, tanned and rested and alone surrounded by enormous piles of money." -Flynn Rider, Tangled
unfortunately fire is the result of excited particles, for one to be truly fire proof would destroy their ability to move, and they would still be meltable, so humanity turns into statues.
Self quoting is the key to sounding wise and all knowing.
Space: the final frontier. These are the voyages of the starship Enterprise. Its five-year mission: to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before. — Captain James T. Kirk