What happens to hearing aids when old fellows die? Louise Carroll of the National Foundation for the Deaf answers.
Is it more efficient for me to cruise down the downhill on a bike and save energy to give it heaps on the uphill, or just keep a steady peddle both down and up hill? Dr Phil Handcock of the University of Otago answers.
Murray Crane answers: Why are all buttonholes on men's shirts vertical aprt from one?