Malaria drug breakthrough, and space radiation vests

Coming up, Australian researchers have found a new way to help prevent malaria. How have they done it? Also, the UK is "leading the world" in efforts to eliminate hepatitis C, a designer vest that could protect our astronauts from space radiation, and how a new aerogel-based toothpaste can tackle tooth sensitivity. Like this podcast? Please help us by supporting the Naked Scientists (thenakedscientists.com/donate)