Asian hornets have been spotted in the UK in record numbers this year, sparking concern about what their presence could mean for our native insects, and in particular bee populations. Madeleine Finlay speaks to ecologist Prof Juliet Osborne about why this species of hornet is so voracious, how European beekeepers have been impacted by their arrival, and how scientists and the government are attempting to prevent them from becoming established here. Help support our independent journalism at theguardian.com/sciencepod