Periodically we dial up one of the finest scientific minds in New Zealand to ask him why coffee cups stay on top of moving cars, or whether failing to open a jar lid actually loosens the lid.
Tonight: what is more efficient filling the kettle with cold water from the tap, or hot water from the tap? Does one boil faster?
Professor Richard Easther, from the University of Auckland joins Emile Donovan to explain.
Photo: 123RF
