This week we delve into the science of salt: what does it do in the body, how can it cause problems for farmers, and what avenues are scientists exploring to desalinate sea water and keep us all refreshed? Plus, one in ten adults have ADHD, the contagious cancer that's followed dogs across the world, and how scientists are growing a brain in a dish to find answers to Alzheimer's Disease... Like this podcast? Please help us by supporting the Naked Scientists