The Ins and Outs of Chips

China has banned products made by the US memory chip giant Micron technology from its infrastructure. A spokesperson for the country's foreign ministry Mao Ning said the step was taken over security concerns but didn't give any details. Making chips has always been a global collaboration but it's also often thwarted by politics especially when powerful nations fall out. Also coming up how scientists in New Zealand are looking to turn fibre broadband cables into earthquake detectors and can AI whip you into shape with its personal training workouts.