In the news this week, we start by asking whether we should start preparing to combat election interference in the wake of the breakthroughs in artificial intelligence. A study is out this week linking lower levels of grey matter in the brain's frontel cortex with an increased likelihood of taking up smoking - we speak to one of the authors. Will Russia's first mission to the moon in 50 years be a success? Plus, an analysis of the impacts of climate change on butterrfly numbers in the UK, and our Question of the Week relates to the states of matter and their relationships with each other... Like this podcast? Please help us by supporting the Naked Scientists