Treating Parkinson's with Ultrasound

Click – Season 26

How can technology help people living with Parkinson's disease? Lara Lewington travels to Madrid to meet a patient undergoing a procedure which uses high frequency ultrasound to reduce tremors. And in Kenya, Michael Kaloki meets the Earthshot Prize winners aiming to cut food waste in rural communities. Plus in gaming news, Andrew Rogers explores how smell can enhance player performance.