Drinks in hand, customers at a London bar attend a sold-out talk on AI and the future during an annual event that takes public science discussions to pubs and cafes around the world. The Pint of Science Festival, now in its twelth year, has expanded to more than 25 countries with more than 450 events in the UK this year. "This opens up something that I would normally not go out of my way to research by myself" says Botsant Muchengwa, an audience member. IMAGES AND SOUNDBITES