Laughing gas doing its thing with a reveller. Source: News Corp Australia IT is a drug more popular than cocaine and ecstasy and deemed so dangerous that organisers of one of the world’s biggest music festivals wrote an open letter urging punters to steer clear of it. It goes by the street names “nangers”, “nangs”, “whippets” and “hippie crack” but you might know it simply as laughing gas. That’s right, the stuff dentists use to sedate their patients is being [...]