Barack Obama has caused a frenzy after saying he thinks aliens are real during a podcast interview. The former US president was forced to release a statement clarifying he had not seen any evidence of extraterrestrials. There is a long-running conspiracy theory claiming the US government is hiding extraterrestrials at Area 51, a highly classified air force site in Nevada. <br> Lucy Hough speaks to the host of the Guardian’s Science Weekly podcast, Madeleine Finlay <strong>– </strong><a href="https://www.youtube.com/@todayinfocuspodcast" rel="nofollow"><strong>watch on YouTube</strong></a><strong> </strong>-- Listen to the Science Weekly podcast <a href="https://www.theguardian.com/science/series/science" rel="nofollow">here</a>. Help support our independent journalism at <a href="https://www.theguardian.com/infocus">theguardian.com/infocus</a>