Under the microscope this week, the science of forensics. We find out how scientists have exploded the myth about old aged whales thanks to a piece of shrapnel, about a new rice-based vaccine for cholera, and 'whey' to go, how scientists have made edible food wrappers from milk. We investigate what your diet does to your hair, how science can finger forgers and flush out bodies from bogs, and why the key to identifying a torso that washed up in the Thames was rooted in plant science. Plus, in Kitchen Science, we arm Ben with a rifle to find out how fat you'd have to be to stop a speeding... Like this podcast? Please help us by supporting the Naked Scientists