Hey, did you hear the one about the two women fighting in a Wal-Mart? It's a real gas! No, really, that's not a punchline. Two women threw ammonia and bleach at one another and created poisonous gas in a Wall-Mart:
A small dose of hydrogen sulfide gas put this little guy into a state of suspended animation for six hours. If the technique can scale up to humans, it could buy doctors valuable time in emergency situations.