Did you know that your currently carrying at least a kilo of bacteria around on (and in!) you at the moment? And that without these hitchhikers we'd get very sick, very quickly? The world is a very different place if you are a bacteria or virus, who can happily live in the most extreme environments on earth, from deep-sea volcanoes to boiling hot sulphur ponds. Join us for an evening with author Idan Ben-Barak for a discussion of life at the microscopic level. Part of the RiAus Great Big Science Read. Free, but please book.