Hearing aids are supposed to help you resume a normal life, but they sometimes make things worse -- and when most clinics aren't prepared to calibrate the devices, it's tempting to ditch them altogether. Norwegian scientists might give you an incentive to keep those earpieces in place, though. They've developed a touchscreen-based tuning system that lets you customize hearing aids largely by yourself. The technology asks you to pick a typical sound scenario (such as a busy office) and introduce extra effects until it replicates the situations where you have problems. After that, an audiometrist only has to adjust the hearing aid based on your feedback.