Combat veterans, many of them from Special Ops, have found success in Las Vegas, where they’ve created a business that allows people to battle zombies in a global apocalypse. It all happens inside a massive facility east of the Strip—bringing in about $2 million a year—and it’s all strangely...

Two bored realtors in Calgary, Alberta, kept trying to come up with a “big idea” to make money. One day they were looking at a bottle of Fiji water and wondered, “If people will buy water from Fiji, will they buy air from Canada?” Apparently they will, especially if the air come from one of the...