Small modular reactors for Wales, and moss survives in space

In the news, why the UK appears to be betting big on small modular nuclear reactors. Also, Iran seeds the skies in bid to end its worst drought in decades. And moss grows fat on a rolling stone - but a new study claims it can survive in space. We'll explore the significance. Like this podcast? Please help us by supporting the Naked Scientists (thenakedscientists.com/donate)